Found in Ferranti's 1969 documentation this circuit has a maximum operating frequency of 7.5 MHz. The circuit can be designed with modern transistors.
Found in 1969 RCA documentation, this dimmer uses a dual time constant setting to achieve better...
Found in a 1968 Mullard manual, this circuit can function as an infrared audio link. The...
This circuit trips when the input voltage exceeds 30 V. Its base is a DIAC and it can be used to...