39results about How to "Overcoming delay effect" patented technology

The invention discloses a nonlinearity negative-feedback and large-current constant stabilized switching power supply of an LED. The nonlinearity negative-feedback and large-current constant stabilized switching power supply is characterized by being mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a voltage comparator U1, a switch filter circuit, a power output circuit, a transformation feedback circuit, a nonlinearity negative-feedback circuit, a current detection amplifier circuit and the like, the switch filter circuit is connected between the positive electrode output end of the diode rectifier U and the in-phase end of the power amplifier P1 in series, the power output circuit is connected with an auxiliary side coil L2 of the transformer T, the transformation feedback circuit is connected with an auxiliary side coil L3 of the transformer T, the nonlinearity negative-feedback circuit is connected with the transformation feedback circuit, and the input end of the current detection amplification circuit is connected with the negative electrode output end of the diode rectifier U. The current detection amplifier circuit is used for achieving current detection, the bearing current of the switching power supply can be effectively improved, and the application range is wider.

The invention discloses an excitation type large-current LED constant switching stabilized power source. The excitation type large-current LED constant switching stabilized power source is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a voltage comparator U1, a switch filter circuit, a power output circuit, a voltage transformation feedback circuit, a nonlinear negative feedback circuit, a current detection amplifier circuit and the like, wherein the switch filter circuit is connected between the positive electrode output end of the diode rectifier U and the same-phase end of the power amplifier P1 in series, the power output circuit is connected with a secondary-side coil L2 of the transformer T, the voltage transformation feedback circuit is connected with a secondary-side coil L3 of the transformer, the nonlinear negative feedback circuit is connected with the voltage transformation feedback circuit, the input end of the current detection amplifier circuit is connected with the negative electrode output end of the diode rectifier U, and the output end of the current detection amplifier circuit is connected with the R end of the voltage comparator U1. According to the excitation type large-current LED constant switching stabilized power source, current detection is achieved through the current detection amplifier circuit, the borne current of the switching stabilized power source can be effectively increased, and the application range of the power source can be accordingly wider.

The invention discloses a hybrid triggering type driving power source for a power system fault detector. The hybrid triggering type driving power source mainly comprises a diode rectifier U, a nonlinear trigger circuit connected with the diode rectifier U, a buffering crystal oscillator circuit and a quartz crystal oscillator circuit, wherein the buffering crystal oscillator circuit and the quartz crystal oscillator circuit are connected with the nonlinear trigger circuit. The hybrid triggering type driving power source is characterized in that a power logic voltage-stabilizing circuit is connected between the diode rectifier U and the nonlinear trigger circuit and mainly comprises a power amplifier P1, an NAND gate IC1, an NAND gate IC2, an NAND gate IC3, an NAND gate IC4 and a diode D2, wherein the N pole of the diode D2 is connected with the output end of the power amplifier P1 and the P pole of the diode D2 is grounded after passing through a resistor R4. According to the hybrid triggering type driving power source, the circuit structure can be greatly simplified, radio-frequency interference of the circuits and radio-frequency interference of external connection can be lowered, and the manufacturing cost and the maintenance cost are greatly lowered.

The invention discloses an excitation type blue light LED lamp protection system. The excitation type blue light LED lamp protection system is characterized by being mainly composed of a gate drive circuit, a logical control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field-effect tube MOS1, a field-effect tube MOS2, a field-effect tube MOS3, a field-effect tube MOS4 and an oscillator, wherein the power amplifier P1 and the power amplifier P2 are connected with the logical control circuit, the pulse comparator U1 and the pulse comparator U2 are connected with the logical control circuit, gates of the field-effect tube MOS1, the field-effect tube MOS2, the field-effect tube MOS3 and the field-effect tube MOS4 are connected with the gate drive circuit, and the oscillator is connected between the negative pole input end of the pulse comparator U1 and the negative pole input end of the pulse comparator U2 in series. The excitation type blue light LED lamp protection system has the short circuit protection function, the overvoltage protection function and the open circuit protection function, and the power consumption of the excitation type blue light LED lamp protection system is quite low and is only one third of the power consumption of a traditional protection circuit. According to the excitation type blue light LED lamp protection system, as a switching current source is arranged, the electricity demand of a protection circuit can be guaranteed, external electromagnetic interference can be effectively avoided, and the control sensitivity and the control accuracy can be improved.

The invention discloses a symmetric transmission type driving power source for a power system fault detecting device. The symmetric transmission type driving power source is characterized by mainly comprising a diode rectifier U, a nonlinear trigger circuit, a main quartz crystal oscillator circuit, an auxiliary quartz crystal oscillator circuit and a power logic voltage stabilizing circuit; the nonlinear trigger circuit is connected with the diode rectifier U, the main quartz crystal oscillator circuit and the auxiliary quartz crystal oscillator circuit are connected with the nonlinear trigger circuit, and the power logic voltage stabilizing circuit is arranged between the diode rectifier U and the nonlinear trigger circuit in a serial connection manner; the power logic voltage stabilizing circuit comprises a power amplifier P1, an AND-NOT gate IC1, an AND-NOT gate IC2, an AND-NOT gate IC3, an AND-NOT gate IC4, an N (negative) pole and the like, and the N pole is connected with an output end of the power amplifier P1. The symmetric transmission type driving power source has the advantages that the power logic voltage stabilizing circuit and the nonlinear trigger circuit are creatively combined with each other, accordingly, circuit structures can be greatly simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.

The invention discloses a light beam exciting type logic protective nolinear negative feedback stabilized switching power supply which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a power output circuit and the like, wherein the switch filter circuit is connected between the diode rectifier U and the power amplifier P1 in series, and the power output circuit is connected with a secondary side coil L2 of the transformer T. The light beam exciting type logic protective nolinear negative feedback stabilized switching power supply is characterized in that a light beam exciting type logic amplifying circuit is further connected between the negative electrode output end of the diode rectifier U and a PWM controller in series, and a logic protection emitter coupled type amplifying circuit is further connected between the reversal phase end of the power amplifier P1 and the switch filter circuit in series. The nonlinear characteristics of a nolinear negative feedback circuit are utilized to enable a regulating tube to be located on the edge of a saturation region automatically, radio-frequency interference of the circuit and external radio-frequency interference are lowered effectively, the circuit structure is simplified greatly, and the manufacturing cost and the maintenance cost are reduced greatly.

The invention discloses a double-buffering trigger type driving power source for a power system fault detecting device. The double-buffering trigger type driving power source mainly comprises a diode rectifier U and a nonlinear trigger circuit. The nonlinear trigger circuit is connected with the diode rectifier U. The double-buffering trigger type driving power source is characterized by further comprising a double-buffering quartz crystal oscillator circuit and a power logic voltage stabilizing circuit; the double-buffering quartz crystal oscillator circuit is connected with the nonlinear trigger circuit, and the power logic voltage stabilizing circuit is arranged between the diode rectifier U and the nonlinear trigger circuit in a serial connection manner; the power logic voltage stabilizing circuit comprises a power amplifier P1, an AND-NOT gate IC1, an AND-NOT IC2, an AND-NOT IC3, an AND-NOT IC4 and the like. The double-buffering trigger type driving power source has the advantages that the power logic voltage stabilizing circuit and the nonlinear trigger circuit are creatively combined with each other, accordingly, circuit structures can be greatly simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.

The invention discloses a driving power source for a power system fault detecting device. The driving power source mainly comprises a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a slider regulator, a power output circuit and a voltage transformation feedback circuit. The switch filter circuit is arranged between an anode output end of the diode rectifier U and a same-phase end of the power amplifier P1 in a serial connection manner, the slider regulator is connected with a sliding tap of a primary coil L1 of the transformer T, the power output circuit is connected with a secondary coil L2 of the transformer T, and the voltage transformation feedback circuit is connected with a secondary coil L3 of the transformer T. The driving power source has the advantages that high-quality input voltages can be provided for the transformer T by a novel power logic voltage stabilizing circuit, accordingly, circuit structures can be simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.

The invention discloses a logic protection amplification type driving power source for a power system fault detecting device. The logic protection amplification type driving power source mainly comprises a diode rectifier U, a nonlinear trigger circuit, a main quartz crystal oscillator circuit, an auxiliary quartz crystal oscillator circuit and a power logic voltage stabilizing circuit. The nonlinear trigger circuit is connected with the diode rectifier U, the main quartz crystal oscillator circuit and the auxiliary quartz crystal oscillator circuit are connected with the nonlinear trigger circuit, and the power logic voltage stabilizing circuit is arranged between the diode rectifier U and the nonlinear trigger circuit in a serial connection manner. The logic protection amplification type driving power source is characterized in that a logic protection amplification circuit is further arranged between the power logic voltage stabilizing circuit and the nonlinear trigger circuit in a serial connection manner. The logic protection amplification type driving power source has the advantages that the power logic voltage stabilizing circuit and the nonlinear trigger circuit are creatively combined with each other, accordingly, circuit structures can be greatly simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.

The invention discloses a novel power supply for a logic protection amplification type power system fault detection device. The novel supply for the logic protection amplification type power system fault detection device mainly consists of a transformer diode trigger circuit, a primary crystal oscillator circuit, a secondary crystal oscillator circuit and a power logic control circuit connected with the transformer diode trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are connected with the transformer diode trigger circuit. The transformer diode trigger circuit consists of a diode rectifier U, a transformer T and a trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are both connected with the trigger circuit. The novel power supply is characterized in that a logic protection amplification circuit is further connected between the transformer T and the power logic control circuit in series. A circuit structure can be greatly simplified, and radio-frequency interference of the circuits and external radio-frequency interference are reduced, so that the manufacturing cost and maintenance cost are remarkably reduced. In addition, the novel power supply can further effectively overcome the delayed effect of a traditional power supply circuit, and the quality of the power supply can be effectively improved.

The invention discloses a logic protection amplification type blue-light LED lamp protecting system. The logic protection amplification type blue-light LED lamp protecting system mainly comprises a grid drive circuit, a logic control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field-effect transistor MOS1, a field-effect transistor MOS2, a field-effect transistor MOS3, a field-effect transistor MOS4 and an oscillator. The power amplifiers P1 and P2 and the pulse comparators U1 and U2 are connected with the logic control circuit; grids of the field-effect transistors MOS1, MOS2, MOS3 and MOS4 are connected with the grid drive circuit; the oscillator is connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system is characterized in that a logic protection amplification circuit is also connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system has functions of short-circuit protection, overvoltage protection and open circuit protection and has low power consumption which is one third of power consumption of a conventional protection circuit.

The invention discloses a non-linear negative feedback switching regulated power supply based on a logic protection emitter-coupled mode. The non-linear negative feedback switching regulated power supply mainly includes a diode rectifier U, a power amplifier P1, a transformer T, a switching filtering circuit connected in series between the diode rectifier U and the power amplifier P1, a power output circuit connected with a secondary coil L2 of the transformer T, a transformation feedback circuit connected with a secondary coil L3 of the transformer T, a non-linear negative feedback circuit connected with the transformation feedback circuit, and the like. The non-linear negative feedback switching regulated power supply is characterized in that a logic protection emitter-coupled amplifying circuit is connected in series between a negative output end of the diode rectifier U and an out-phase end of the power amplifier P1. The non-linear negative feedback switching regulated power supply provided by the invention has the advantages that through the non-linear property of the non-linear negative feedback circuit, regulating transistors can be automatically kept at the edge of a saturation region, so that the radio-frequency interference from the circuit and an external device is effectively reduced, and the circuit structure is greatly simplified to achieve much lower manufacture and maintenance costs.