Regenerative circuit for two sensors (CB8266E)

Found in a 1967 American publication, this circuit with feedback for two transistors has a gain of 20 times. Phototransistors are types of the time.

| Clique na imagem para ampliar |

Zener Test (CB5326E)
With calibrated RV1 it is possible to find a zener diode voltage. The integrated circuit is 0 741...
Symmetric Power Supply (CB16761E)
This power supply was originally created for the CB16760E (Loudness System) but can be used in any...
Sequential Turn Signal (CB23940E)
This car turn signal circuit was found in the April 1969 issue of Radio Electronics magazine. The...