We found this circuit in a 1965 General Electric manual. The components are from the period. Time resistors and capacitors can be changed.
This circuit was found in a 70s American documentation. The operational amplifier supports a modern...
This limit alarm was found in a 1980s US documentation. Comparators can be equivalent and the...
This VHF receptor was found in a Japanese publication from the 1960s. The original transistors can be...