This circuit was obtained in a 90s Popular Electronics. It is used for tuning on AM radios. The field effect transistors used support equivalents.
With this circuit it is possible to use a control voltage to select audio signals that pass...
Found on an Elektor from the 90s, this TTL circuit generates a predetermined number of pulses with a...
Using the CK722 this directional photometer was published in Radio Electronics magazine in July...