This circuit is from an American publication of the 80's. It makes use of components of the time. However, the circuit is the basis for a modern shield application since the input is TTL.
This circuit is used in the analog part of the telephone lines. The same circuit can directly...
November 2016 - New LM2904 amps amplifiers consisting of specially designed operational amplifiers for motor...
This circuit is from an ancient American documentation. The coil is frequency dependent and the...