Hybrid driving circuit for tobacco leaf drying heat dissipation apparatus
A technology of cooling device and driving circuit, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of unstable driving and poor driving ability, avoid starting overcurrent trip, improve heat dissipation efficiency, and save electricity The effect of resources
Inactive Publication Date: 2016-10-26
SICHUAN RONGXING IND
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the defects of poor driving ability and unstable driving of the drive circuit for the heat sink of the tobacco leaf drying system in the prior art, and provide a hybrid drive circuit for the heat sink of the tobacco leaf drying system
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[0022] Such as figure 1 As shown, the present invention is mainly composed of a driver chip U1, an undervoltage protection circuit, a linear adjustment circuit, a constant current circuit, a voltage stabilization circuit, a bandgap reference circuit, and a start-up circuit. The constant current circuit is composed of a triode VT2, a resistor R1, an adjustable resistor R5, a resistor R7, a resistor R8, a resistor R9, a resistor R13, a polar capacitor C2, a polar capacitor C5, and a diode D3.
[0023] When connecting, the P pole of the diode D3 is connected to the DSE pin of the driver chip U1 through the resistor R9, and the N pole is connected to the emitter of the triode VT2 through the resistor R7 and the adjustable resistor R5 in sequence. The negative pole of the polarity capacitor C5 is connected to the base of the triode VT2, and the positive pole is connected to the COM pin of the driver chip U1. One end of the resistor R13 is connected to the TM pin of the driver chip...
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The present invention discloses a hybrid driving circuit for a tobacco leaf drying heat dissipation apparatus, and is characterized in that the hybrid driving circuit is mainly composed of a driving chip U1, an under-voltage protection circuit, a constant current circuit, a voltage stabilizing circuit and a band-gap reference circuit which are connected with the driving chip U1, a linear regulation circuit serially connected between the band-gap reference circuit and the voltage stabilizing circuit, and a starting circuit connected with the voltage stabilizing circuit; the under-voltage protection circuit is connected with the constant current circuit; and the voltage stabilizing circuit is connected with the constant current circuit and the band-gap reference circuit. According to the hybrid driving circuit, the current total harmonic distortion can be less than 3%, the output current precision can be within plus or minus 2%, driving capability of the hybrid driving circuit can reach 60W, starting current can be effectively reduced, starting over-current trip can be avoided, and therefore stability of heat dissipation of the tobacco leaf drying heat dissipation apparatus can be ensured by the hybrid driving circuit.
Description
technical field [0001] The invention relates to the field of electronic energy saving, in particular to a hybrid driving circuit for a tobacco leaf drying and cooling device. Background technique [0002] Tobacco leaves are raw materials for the production of the tobacco industry, and they need to be dried before being used as raw materials for the production of the tobacco industry. At present, when people dry the tobacco leaves, they often use heat sinks to dissipate heat from the heating pipes, so that the heat of the heating pipes can fully dry the tobacco leaves. The motor drives the wind generated by the impeller to achieve this. However, the existing driving circuit used for drying and cooling devices for tobacco leaves has poor driving ability and unstable driving, which leads to problems of unstable drying temperature of tobacco leaves, poor drying quality, and high drying cost of tobacco leaves. [0003] Therefore, it is urgent to provide a driving circuit that c...
Claims
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IPC IPC(8): G05F1/573
CPCG05F1/573
Inventor 柯友财
Owner SICHUAN RONGXING IND