We find this circuit in an American 80's documentation. No further information about the transformer is given. The circuit serves as a reference for any repair work.
This non-inverting AC amplifier was found on a Popular Electronics. The setting applies to any...
This circuit uses a piezoelectric transducer to produce sounds like a buzzer. Frequency is...
The circuit shown in figure 1 is suggested by Maxim (www.maxim-ic.com) and makes use of the...