In the figure we have a circuit used in stair generators with the purpose of providing constant increases in pulse intensity. The circuit is from American documentation from 1968.
This circuit was found in Popular Electronics. Its purpose is to warn the visually impaired when a glass...
This circuit was obtained from a Popular Electronics from January 1967. It has a...
This ultrasonic transmitter was found in a 1974 documentation. The receiver is the CIR11753 or...