This circuit was found in Radio Electronics magazine from August 1966. The transistors are from the time and the power supply from the power grid is included.
This circuit was found in a 1967 Philips documentation. The circuit fires when light stops hitting the...
We found this circuit in a 1990 documentation. It draws one out of 10 numbers and during the draw...
This preamplifier for magnetic cartridges was found in the February 1990 issue of Radio...