This Pre-Amplifier circuit is a minimalistic design, a.o. inspired by valve design, which should help sound clarity. The circuit counts 5 transistors, has 0.1% distortion (expected from 60dB loop gain ...

Here comes a small but intelligent circuit that virtually prevents us from making power supply errors, using a different cable for each single output voltage. Let’s see how the power supply unit (PSU) ...

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A DIY The Wrench maker has built a smart desk dustbin with an automatic iris-style lid, adding both functionality and a unique touch to a… ...