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How to identify 555 555 timer pins?

What is the purpose of 555555 pin 6?

  • 555 Timer Pinout. Pin 6 is the threshold pin. The purpose of this pin is to monitor the voltage across the capacitor that's discharged by pin 7. When this voltage reaches 2/3 of the supply voltage (Vcc), the timing cycle ends, and the output on pin 3 goes low.

How do I draw a 555 circuit diagram?

  • When drawing a circuit diagram, always draw the 555 as a building block, as shown below with the pins in the following locations. This will help you instantly recognise the function of each pin: Connects to the 0v power supply. Detects 1/3 of rail voltage to make output HIGH. Pin 2 has control over pin 6.

Why is the IC 555 called 555?

  • This is one of the most commonly asked questions. It is called 555 because of its internal circuit. There are three 5k ohm resistors in the IC which are connected in series between the VCC and GND pins and are used as the voltage dividers. As you can see in the picture below.

image-How to identify 555 555 timer pins?
image-How to identify 555 555 timer pins?
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