This circuit, which can be used as a shield, was found in Radio Electronics from the 90s. The operating circuit can be replaced by a lower voltage 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...