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Archives for Battery Charger

Automatic battery charger circuit

Automatic battery charger circuit Part 2N3055, 7812, 1N4148, 7805, 1815, relay,

How to Repair Power Supply TV ?

How to Repair Power Supply TV Please check the power supply voltage 220V, and fuse. When normal voltage is 220V and sekreng normal, then check the voltage at 400V DC Elko, if no voltage then check the 4 diodes, maybe something is broken. then, if the voltage is measured at 400V 400VDC elko exactly, then […]

Simple RF Signal Strength Meter

Simple RF Signal Strength Meter RF Signal Meter circuit diagram Signal Level Meter, Satellite Meter QAM & DVB Analyzer using 2N3819, 2N229  

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