This time base circuit was found in the January 1988 issue of Radio Electronics magazine. The output signals are 1 Hz and 10 Hz TTL.
We found this circuit in a 1998 documentation. It is based entirely on relays that must have...
This traditional complementary symmetry circuit provides 20 W of rms power at a load of 8 ohms...
Assembled with SMD components this circuit can be very small. The range is a few tens of meters. We...