Control circuit based on switching action of triode
A switching function and control circuit technology, applied in electronic switches, electrical components, pulse technology, etc., can solve the problems of complex control circuit mechanism, unstable circuit performance, narrow application range, etc., and achieve simple design, simple signal amplification, and application wide range of effects
Inactive Publication Date: 2016-06-08
BOZHON PRECISION IND TECH CO LTD
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Problems solved by technology
[0004] For this reason, the technical problem to be solved by the present invention is that the control circuit mechanism based on the triode switch function in the prior art is complex, the circuit performance is unstable, the cost is high, the application range is narrow, and it is not a simple signal control. Functional control circuit
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[0020] Such as figure 1 As shown, the control circuit based on the switching function of the triode of the present invention includes: a triode Q1, a first resistor R1, a signal relay K1, a diode D1, a second resistor R2, and an indicator LED1.
[0021] The base of the triode Q1 is connected to the network connection point ET1 through the first resistor R1, the emitter of the triode Q1 is connected to the power supply VCC, and the collector of the triode Q1 is connected to pin 8 of the signal relay K1. The power supply VCC can be selected from an appropriate voltage. In this embodiment, the transistor Q1 is a PNP transistor, and the transistor Q1 is a PNP silicon transistor whose model is S8550. Transistor S8550 is a commonly used common triode, it is a low voltage, high current, small signal PNP silicon triode. The first resistor R1 is a triode base resistor, and in this embodiment, the first resistor R1 is 330 ohm / 0603 / 1%.
[0022] Pin 1 of the signal relay K1 is grounded...
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The invention discloses a control circuit based on the switching action of a triode. The control circuit comprises an triode Q1, a first resistor R1, a signal relay K1, a diode D1, a second resistor R2 and an indicator light LED 1. According to the control circuit, simple control of the signal relay, simple high / low level output and single signal amplification are achieved via the switching action of the triode, the performance is stable, the design is simple, the cost is low, the application range is wide, and the control circuit is the simple signal control and is an essential control mode in signal switching. According to the control circuit, through arranging the diode, the electromotive force energy at the outage moment of the signal relay can be released, thus the energy is prevented from interfering the circuit signal or other elements, and from influencing the use performance and stability of the circuit.
Description
Technical field: [0001] The invention belongs to the technical field of control circuits, and in particular relates to a control circuit based on the switching function of a triode. Background technique: [0002] Triode, the full name should be semiconductor triode, also known as bipolar transistor, crystal triode, is a semiconductor device that controls current. Its function is to amplify the weak signal into an electrical signal with a larger amplitude value, and it is also used as a non-contact switch. Crystal triode is one of the basic components of semiconductors. It has the function of current amplification and is the core component of electronic circuits. The triode is made on a semiconductor substrate with two PN junctions that are very close to each other. The two PN junctions divide the whole semiconductor into three parts. The middle part is the base area, and the two sides are the emitter area and the collector area. The arrangement is PNP There are two types o...
Claims
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IPC IPC(8): H03K17/56
CPCH03K17/56
Inventor 吕绍林杨愉强王建福张永前
Owner BOZHON PRECISION IND TECH CO LTD