Found in an Electronic Design of 1964, this circuit is intended to the signal amplification in the 88 to 108 MHz band. The transistor can be a modern equivalent.
This circuit is from Popular Electronics from the 90's. The circuit discharges the battery with a...
We found this circuit in the October 1993 Electronics Now magazine. The 4-channel circuit is...
With the appropriate choice of C1 and C2 it is possible to divide the frequency of a rectangular 3 V...