This circuit is the receiver for the previous transmitter modulated by an audio signal. The transducer is a ceramic capsule, in which case the circuit becomes ideal for telegraphic transmissions.
This oscillator can be used to produce signals ranging from a few kilohertz to approximately 10...
This circuit measures alternating voltages on 5 scales and its accuracy depends on the tolerance of the...
This circuit was obtained in a 90’s Popular Electronics. The operators admit equivalents such as...