Tagged: Amplifiers

Bench AF Amplifier 0

Bench AF Amplifier. Schematic Diagram.

The circuit… This circuit consists of just a few discrete components and one common IC amplifier – the LM380N. It’s simple, cheap, quick to build and works well. I built mine in a steel,...

Amplifier Impedanse measurement 0

Amplifier impedance measurement

Starting with the EMRFD Fig 2.57 amplifier as a base, you can measure input returnloss using a return loss bridge. Return loss can be translated into VSWR and impedance. If the return loss is...