Tag Archives: Monitoring

Eco-Friendly Power-On Indication

Posted on July 8, 2010 by Rend
POWER ON

This is a power on circuit that works temporarily only when the power is turned on, this  LED illuminates for a few seconds, then turns off again.   This design is eco-friendly since it consumes only a little power at the … Continue reading →

Posted in Lighting and LED Circuit, Power Supply | Tagged | Comments Off

Single Transistor Lead Acid Battery Monitor

Posted on June 17, 2010 by Rust
Single Transistor Lead Acid Battery Monitor

Using a dual-colour LED and few surrounding components, we can make a very simple battery monitor. This battery monitor circuit is suitable for  monitoring your car battery, enrich your dashboard with cool and functional accessory. Orange colour is produced by … Continue reading →

Posted in Power Supply, Test and Measurement | Tagged , | Comments Off
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