This circuit is for traditional old-style telephone lines found in an American 1980s documentation. Components are common and the optical coupler can be replaced with an equivalent.
The circuit presented is from the 1977’s Linear Integrated Circuits and MOSFETs from RCA. The...
We find this encoding circuit in an American 1980s amateur radio documentation. The circuit can be...
November 2016 - The new Ohmite TO-126 power resistors in the range of 0.09 Ω to 51 kΩ with...