Additional Pull Pull (CB6119E)

This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.

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PC capacitance meter CB20545E (CB20545E)
The circuit presented is an interface or shield for capacitance measurement as a PC. We found it...
AC voltage probe (CB8185E)
This circuit for voltages up to about 20 V was found in a 90s Popular Electronics. The LED can be...
Latch for SCR (CB7245E)
This circuit is from a 1966 General Electric documentation. The circuit applies to sensitive SCRs for...