Willen
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The simplest constant current limiter with 'load indication' - A very simple constant current limiter circuit with a tricky load indicator
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The simplest constant current limiter with 'load indication' - A very simple constant current limiter circuit with a tricky load indicator
Here is a very simple constant current limitter circuit (I never seen before) which can detect the load by the LED, a clever trick. The LED glows only if the load is connected. So if we used the circuit as a constant current charger then the LED performs as a 'charging is ON' indicator. The circuit has tricky bias so the LED is working there as a reference voltage (Vref) regulator and also as a load indicator. And I made it possible just using four cheap components.
Connecting the...
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