#Transistor tester pcb driver

#Transistor tester pcb driver

Last, the output as above will flow to the transistor TR1 to the driver the relay to works as desired. For LED-D5 show the working of the output pulse from the frequency divider circuit. The program is a binary base 2 by 1 = positive, 0 = ground. After that, the signal flow to the frequency divider-IC3-CD40103 The frequency divider circuit The frequency divider circuit works by using the divided frequency IC as a program types From the 2-256 number with setting the voltage at the control input pin. Which IC2A and IC2B is the Schmitt trigger form. Then, the IC2-CD4093 will set the waveform. we know that the signal from the sender is entered the receiver to complete. But if the voltage lower than pin 2 then the voltage output is “0” This setting causes the noise signal that may be unusual to be eliminated. Input voltage with a defined voltage at Pin 2. Then, the setting circuits consist of a wave which is compared to IC1B. We must set a new wave, which it has a range of up and down change quickly. The 5Khz signal will be inserted into the double DC to DC converter include of D2, D3, R6, C4.įigure 2 The special infrared receiver circuit Setting IR receiver waveform Since the waveform that may be inappropriate. But that frequency of 5 kHz will have a high gain of 1,000 times. The determining circuit will cause a low frequency, this circuit has a gain equal to 1. Which consist of the feedback circuits R4, R5, and C2 that join with IC1. The component is received a signal is a photodiode D1, the signal across D1 will be sent to the filter circuit that will allow the 5KHz frequency only can through it. This contains 4 main parts of the work as follows: the signal receiver and filter circuit, the set waveform, the frequency divider, and the driver relay circuit. How special infrared receiver circuit works Look at the circuit diagram of the Infrared Receiver in a larger version as below. To control the circuit works when you enter an input pulse signal of 1 to 256 times. Special Infrared receiver using LM1458 CD40103Īs simple circuit above, If you want the circuit with special features, can set the program. Simple Continuity Tester circuit using IC-4011.You can assemble them into Universal Board as Figure 2 -the components layout-.įigure 2 the components layout on universal PCB. First, you may test them on a breadboard. Infrared Remote control 50 feet 2 Channel.IR appliance switch circuit using any infra-red remote control.Related to Simple Remote Control circuits The variable resistor VR1 is used to adjust the sensitivity of the circuit. The Q1(PNP transistor) also gets a bias current. the current from the ground can flow through R1 to Q1. The phototransistor-Q1 will get the infrared light, the current flows through it to the base of Q2(PNP transistor BC558).

So we use the phototransistor as the light receiver from the remote control. In this Simple remote control tester circuit. But a phototransistor can detect infrared light. Because the human eye cannot see infrared light. This circuit acts like the infrared receiver of electrical appliances.