Comments on: Simple 5V Regulated Power Supply For Digital Circuits

By: Mohammad

Mohammad — Sat, 04 Feb 2012 16:28:55 +0000

@Genorie Velasquez. The general rule of thumb is, you use the capacitor with double voltage rating. e.g.: If you place a 100uF capacitor accross 7V, the voltage rating of the capacitor must be at least 14V (~16V). Regarding the value of the capacitor, whether you will use 100uF or 470uF or 1000uF, that depends of the output load. If you are using a microcontroller that requires less power, a small 100uF would be enough. If you are planning to drive motors and microcontrollers together, you better use a bigger cap (i.e.: 1000uF), so that at the pick load the motors don’t suck all the power which is mandatory to prevent the microcontroller from being reset.

Regarding the “short circuit ” issue. You got it right. The schematic was drawn wrong. Sorry about that. But you know how to fix it.

Note: All the schematics in this website are implemented first and then posted (not theoretical).

By: Genorie Velasquez

Genorie Velasquez — Sat, 04 Feb 2012 10:23:17 +0000

if I change the Component “78o5 regulator” to a higher “7807 to 12″.. Do I need change the Capacitors value too?..
The Supply and Ground are Sorted after the Led.. Short Circuit!!.. sometimes I don’t believe on Simulations.. but How About This?..
Question: Does It Work on Actual.. Or it is better on that way?

Nice work!! sir..

By: Papunblg

Papunblg — Fri, 17 Jun 2011 12:08:55 +0000

Why +ve and -ve rails are sorted after the LED?

By: The First 8051 Microcontroller Project – LED Blinking : Mohammad

The First 8051 Microcontroller Project – LED Blinking : Mohammad — Sat, 27 Feb 2010 22:03:23 +0000

[...] microcontroller which is ideal for first time learning MCU Chip. I used my previously made 5V Regulator to supply uninterrupted regulated DC voltage. The program is very simple and straight forward, that [...]

By: karthik

karthik — Sun, 26 Feb 1928 07:56:08 +0000

fine thanks