Misc power circuit diagrams
A novel supply voltage monitor which uses a LED to show the status of a power supply.
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The simplicity of this circuit uses just two components, but with just one resistor and an LED this circuit gives visual indication of when a fuse has blown.
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Senses high current-flow into power cables
No wire-cutting, three versions available
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Signals when an on-circuit battery is exhausted. 5V to 12V operating voltage.
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There are many circuits available on the net, for indicating battery status.
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This is a replacement power source for 1.3V mercury cells or other small batteries. It has many uses and I use this circuit in my computer to power a front panel multi adapter which has a digital thermometer.
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Beeper and/or LED remotely-operated via mains supply line Simple circuitry, easy to build units
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Useful for power lines control. Simple, transformerless circuitry
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This circuit allows you to set a limit on the maximum output current available from your PSU. It's very useful when you power-up a project for the first time - or carry out a soak-test.
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Mains sockets switched automatically by a Control Socket
Up to 1000W switched power
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