Posts Tagged ‘Battery Tester’
- Variable High Power “Resistor” For Power Supply Testing
Current handling capability of a power supply system often needed to be checked. Finding high power rated variable resistor to provide variable load testing might be difficult. There is wire wound type but it’s not always available at your local store, and the price and performance might be disappointing. This variable high power “resistor” uses …[Read More]
Single Transistor Lead Acid Battery Monitor
We can make a very simple battery monitor using a dual-colour LED and a few additional components. When the red and green LEDs are illuminated, the LED produces orange. The following battery monitor circuit turns on the red LED below 10.5v. The green LED illuminates above 11.6v. The orange LED illuminates between 10.5v and 11.6v. …[Read More]
Two Transistors Lead Acid Battery Monitor
Three separated LEDs is used on this battery monitor circuit. For red LED, it’s turn on from 6v to below 11v and turns off above 11v. For the orange LED, its illuminate between 11v and 13v and turns off above 13v. The green LED illuminates above 13v. This battery indication is suitable for monitoring your …[Read More]
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