This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with modern equivalents. Output transistors may be BD135 and 136 with heatsinks.
This circuit changes an audio signal to get better reproduction. It is important when editing...
Found in an American documentation from 1992, this circuit for medium and short waves uses a CI of...
This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the...