We find this circuit in a 1980s Linear Technology documentation. The circuit can be implemented on the basis of more modern equivalent components.
When pressing S1, S2 or S3 this circuit generates different tones for a tone-modulated...
This circuit, suggested by Motorola, provides a voltage of 15 V under a current of up to 2 A. The...
In the figure we present a circuit that has an insulation voltage of 2,500 V at 60 Hz and...