This circuit is from a 1977 Radio Shack manual. The photocell is an LDR and the operational one is a 741. Components with non-standard values can be approximated.
This circuit generates clear signals in harmonics that can be used for testing mid-wave radios. The...
We found this circuit in Texas Instruments documentation from 1986. The circuit produces a...
This circuit using an Unijunction Transistor produces a 240 Hz saw tooth signal. The frequency...