This circuit was found in an Electronic World of 1968. The circuit uses power transistors of the time. The transistors are for 25 W of dissipation.
We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as...
This audio oscillator is from a 1957 Raytheon publication. The tone generated depends on C2 and C2...
This circuit was found in an Electronics Now from the 90's. See the previous article for the...