This circuit limits the intensity of an audio signal from a control voltage. The circuit is from a 90’s Radio Electronics. The coupler is a type that uses LDR.
This low-current power supply was obtained in Japanese documentation from 1968. The currents are...
This circuit can operate with 27 MHz transmitters, having been found in a Japanese publication from 1967....
This circuit is from the National Semiconductor CMOS manual of 1977. What this circuit does is to...