Transistorgrab

This article takes a look on the costs of batteries compared to accumulators and additional chargers.

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This article shows an operational amplifier (OP) that is used as an impedance converter. This ciruit will then extended to a non-inverting amplifier.

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What hobbyist does not know the problem, that a commercial case does not quiet fit for the current project?

This method shows a case construction with a low bill of materials.

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In some cases one needs a comparator with a hysteresis. This curcuit suggestion shows further the possibility of a inverting or non-inverting operation.

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