This circuit was found in a 1966 EEE. What it does is it converts the logic levels of 0 V and +4 V into -6 V and +6 V. Some older type transistors can be replaced by modern equivalents.
We found this circuit in the Radio Electronics magazine of December 1972. It generates signals in 6...
With the circuit shown in the figure it is possible to generate signals up to a frequency of 110...
This timer uses common components and can be used for time intervals up to a few hours. The...