This is one of the first radios with an integrated circuit. The circuit is from a Radio Electronics from November 1969. The circuit is powered by a 9 V battery.
We found this shield circuit in a 1991 technical documentation. The phototransistor can be...
January 2017 - Texas Instruments is making available through Mouser Electronics the new Buck...
The figure shows how to obtain a locking relay for an alarm circuit with sensors in series and in...