This OF-1 LO oscillator was found in a 1980s American documentation. The transistor can be any general-purpose and C1 / C2 are determined by the frequency.
The interesting circuit shown in the figure, can have its gain digitally controlled and present two...
We found this circuit in an old Mullard (Philips) documentation. The sensor consists of a...
This is a circuit with two switches, one turns on and the other turns off for DC loads using SCR....