Evan Allen

UNITED STATES OF AMERICA • + Follow

Ivan Mendoza

MEXICO
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1

Components

	SOIC 556 timer	x 1
	0603 100nF capacitor	x 2
	0603 4.7k resistor	x 1
	0603 100 ohm resistor	x 1
	0603 100k resistor	x 1
	sot-23 2n7002 FET	x 1
	timing components (values to suit)	x 4

Description

Compact pulse generator / restart circuit

This project uses a 556 timer to generate a pulse a certain time after being turned on. That pulse is run through a 2n7000 FET to be open collector and you can use it to virtually 'press a button' after powering up a device. The entire writeup can be found across several entries here, here, and here.

Schematic and Layout

github

https://github.com/abzman/small-useful-PCBs/tree/main/556%20power%20on%20reset

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Feb 06,2024

353 views

Compact pulse generator / restart circuit

a timer circuit that generates a programmable pulse a programmable amount of time from boot. A million and one uses!

353

Published: Feb 06,2024

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BOM(Bill of materials)

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