2N4988 and 2N4989 (IP058E)

SUS (Silicon Unilateral Switches) with a 8 V trigger voltage used in the controlo f SCRs and other applications.

Dial Tone Generator (CB5984E)
This circuit is from an old documentation making use of a 3,579,645 MHz analog color television...
Pulse Generator 555 (CB17244E)
This circuit generates short pulses. The transistor can be a 2N2222 or BC548 and the frequency is given by...
FET Hartley 2 (CB22392E)
The difference between this oscillator in relation to the previous one is in the use of source...