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

9v Battery Voltage Monitor

9v Battery Voltage Monitor

Nine voltage batteries are used in a wide variety of electronic devices. But, you often do not know when it is time to change the battery until the device stops operating.
The hobby circuit below provides a visual indication when the battery needs to be replaced. It uses a neat IC from Linear Technology, which contains a very low power voltage reference and a voltage comparator. The circuit is designed to turn on a LED indicator light when the battery voltage drops below 7.2 volts.

Visit Here for more.







 

More Articles to Read

An Arduino laser pinball machine
An Arduino laser pinball machine
CTCSS fingerprinting: A method for transmitter identification
CTCSS fingerprinting: A method for transmitter identification
TI DLP® Pico™ Technology for Aftermarket Head-up Displays
TI DLP® Pico™ Technology for Aftermarket Head-up Displays
Brute force computation for cheap log digital potentiometer
Brute force computation for cheap log digital potentiometer
Smart "Homer"
Smart "Homer"
A DIY Segway-style vehicle
A DIY Segway-style vehicle
Superbeta transistors inside: Die photos and analysis of the LM108 op amp
Superbeta transistors inside: Die photos and analysis of the LM108 op amp
Peeqo is a desktop bot that communicates through GIFs
Peeqo is a desktop bot that communicates through GIFs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Serial seven segment LED display shield
Serial seven segment LED display shield

Top


Shares