This 10 kHz filter was obtained from an article in Electronics Now magazine in February 1995. The power supply is dual and other equivalent operating conditions can be used.
This commercial radio from Iwata Electronics was manufactured in Japan in the 1960s. The circuit uses...
I found this circuit in an old British magazine from 1976. It is possible to test operational...
This circuit provides a delay for the activation of an alarm, giving the owner time to leave the...