Found in a 90s R-E Experimenter Handbook, this circuit has a greater gain than the previous one for presenting two stages. The integrated circuit used is uncommon today.
This isolated shield is from an old documentation, making use of an operational one of the time. It...
We found this transmitter circuit in a 1990s spy book. The coil data is provided along with the...
In this circuit we have the way to use common diodes to obtain low regulated voltages in a single...