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Paralleled LM317 Circuit Has Excellent Stability/Load RegulationParalleling LM317 regulators for higher current, using TL431 reference for excellent performance
- crutschow
- Updated:
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Accurate, Adjustable SCR Crowbar Circuit For Overvoltage Protection Using TL431 ReferenceTL431 provides accurate, adjustable voltage crowbar function for circuit overvoltage protection
- crutschow
- Updated:
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NiZn Battery Charger With Auto Cutoff Using LM317Charger performs recommended charging function for rechargeable NiZn batteries
- crutschow
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FM Transmitters
2010-10-29
I have quite a few so I decided to post many FM transmitter schematics.
PS/2 (AT) Keyboard Module (Swordfish)
2010-10-03
[IMG]http://static.electro-tech-online.com/imgcache/10346-ps2_keyboard.jpg[/IMG]
I recently wrote
computer parallel port help..plz read once
2010-09-30
hello friends,
i am trying to make a 3 Axis 3 axis cnc router. i want to control the 3 stepper
Low pin-count microcontrollers like PIC12F series don't have enough I/O ports to directly drive a s
Simple Telephone Central Project
2010-09-04
This simple telephone switching system is designed by Dr. Mustafa Kemal PEKER
for training purpose
Water Activated Alarm
2010-09-04
The circuit uses a 555 timer wired as an astable oscillator and powered by the emitter current of t
Eagle Schematic Tutorial
2010-08-08
I wrote up a Eagle tutorial for another user on this forum, but I thought, what the heck someone el
This project uses a lead-acid battery to power some strings of LED’s at night for illumination of
The circuit has been designed to simulate a canary “Harzer Roller”. It consists of six timer IC
A variable DC power supply is one of the most important tools for an electronics hobbyist. Most of
ULTRA clean 9VDC Power Supply Project
2010-07-09
Here is a small power supply project that I would like to share with all the members of this forum.
Audio Perimeter Monitor
2010-07-06
Using a single cable such as speaker wire or doorbell cable, this circuit can be remotely positione
Audio Notch Filter
2010-07-06
At first glance this circuit looks fairly complex, but when broken down,can be divided into high pa
This circuit is a simple two transistor (2N2222) FM transmitter. No license is required for this tr
FM Transmitter (#1)
2010-07-06
This circuit is a simple two transistor (2N2222) FM transmitter. No license is required for this tr
Night Buzzer
2010-07-06
If you want revenge that won’t kill someone, just make them go insane, have I got the thing for y
1.5 Volt Tracking Transmitter
2010-07-06
The current draw for this tracker is 3.7mA, so the 1.5V button cell will last awhile. What the heck
AM Radio Receiver
2010-07-06
Here's a very simple AM Radio circuit I've designed couple of years ago. Don't know whether anybody
Strobe Light
2010-07-06
Strobe lights are widely used by disco lovers to create wonderful visual effects in disco halls and
5 Zone Alarm System
2010-07-06
Each zone uses a normally closed contact. These can be micro switches or standard alarm contacts (u
Latest threads
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Rice cooker auto switching problem
- Started by Malinga the professor
- Replies: 0
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