Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Simple Polarity Tester

Simple Polarity Tester

This tester can be used to check the polarity of any power source, and is therefore very useful when installing automotive equipment, alarm systems or anything else you can think of. Because this circuit is so simple and cheap, even frying one with an over voltage is not a big deal.
Part Total Qty. Description Substitutions

R1 1 1K 1/4W Resistor
D1 1 Green LED
D2 1 Red LED
D4, D5, D6, D7 4 1N4001 Silicon Diode 1N4004, 1N4005, 1N4007
MISC 1 Board, Wire, Case, Probes

Visit Here for more.

 

More Articles to Read

Bus Pirate v3.8 free PCB build
Bus Pirate v3.8 free PCB build
App note: Testing inductors at application frequencies
App note: Testing inductors at application frequencies
1968 Princeton Reverb Repairs
1968 Princeton Reverb Repairs
Skill Sunday: Power Over Ethernet for Arduino
Skill Sunday: Power Over Ethernet for Arduino
More on Color TFT Displays ~ The Big Ones — 240 X 320
More on Color TFT Displays ~ The Big Ones — 240 X 320
Magnetic Rotary Encoder
Magnetic Rotary Encoder
Vertical Pole Climbing Robot
Vertical Pole Climbing Robot
ESP8266 Weather Station Projects
ESP8266 Weather Station Projects
Single tube Lethal Nixie clock
Single tube Lethal Nixie clock
How to make a simple 1 watt audio amplifier (LM386 based)
How to make a simple 1 watt audio amplifier (LM386 based)

Top




Shares