This circuit with 10 MHz and 1.25 MHz TTL outputs was found in an American documentation from the 1980s. The used integrated circuit is uncommon today.
This circuit uses in operational amplifier to produce square and triangular low frequency signals....
This filter has a cut-off frequency of 1 kHz by letting pass those that are above this value. The...
This circuit keeps a flashing LED when a balcony lamp, for example, is turned off. As a result,...