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 triac phase control circuit uses an integrated circuit not very common today. We found this...
Using a period sensor, this circuit triggers a relay when pressure changes occur. The circuit is...
The circuit shown is an AND gate with three inputs using a comparator of the four existing in an...