| The diagram shows how a three-phase sine wave oscillator can be built with a single Type UAF42 state-variable filter and some resistors an...
| The diagram shows how a three-phase sine wave oscillator can be built with a single Type UAF42 state-variable filter and some resistors an...
| In limited bandwidth circuits, any periodic or repeated waveform can more easily be made with square waves; the reason is that from a clo...
| A frequency counter is indispensable in the design, repair and test of audio and hi-fi equipment. The counter presented here can either b...