Stage with FET and Bipolar (CB6152E)

This circuit is from an Electronics World of 1967. The described calculations can be applied to equivalent circuits with modern transistors.

| Clique na imagem para ampliar |

a Photodiode Amplifier with Trigger (CB4579E)
In the figure we have a sensor circuit that makes use of common transistors and a photo diode as...
Diode Coupled Multivibrator (CB19521E)
This unusual configuration, but which has already been explored in other articles, uses diodes in the...
Proximity Switch 567 (CB15008E)
This circuit uses a modulated signal from a PLL 567 to operate safely with an infrared emitter. The...