This timer, like the previous circuits, uses a currently uncommon integrated circuit. The time is given by capacitor C1 and R2 which has the range of values indicated in the diagram.
A safe way to obtain a sinusoidal signal of excellent quality and low frequency without the need...
This circuit can measure audio output power up to 50 W. The circuit is wired to the output of an...
We found this circuit in a publication from the 1970s, but it can still be assembled today by...