This circuit is powered by a voltage of 4.5 V, being common in radios of the 60's. The circuit is from Mullard's transistors reference manual.
We obtained this circuit from an old European publication. It generates sinusoidal signals...
This circuit consists of a variation of a 4-input control, with the difference that we have only...
Photoelectric cells can be used as sensitive light sensors. However, the low voltage they generate...