transistorized differential amplifier (CB25639E)

This circuit uses matched transistors. The circuit is from Electronics Now magazine and has a balance adjustment.

| Clique na imagem para ampliar |

Filter with the LM102 (CB12559E)
In the figure we have a circuit suggested by National Semiconductor, using an operational...
Tone control (CB15478E)
Tone controls for audio applications can also be considered filters that must attenuate certain...
1 kHz oscillator (CB12899E)
This circuit was found in an Argentine publication from 1973. It uses a common AM coil (50 + 50...