This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
This circuit uses damped oscillations to test an inductor. It can also be used to find the...
This filter rejects the hum of 60 Hz from power grid, being placed between the signal source and...
This small automotive NiCad battery charger uses only passive components and has the number of...