Touch switch activated relay – source A very simple touch switch circuit diagram can be constructed using this circuit schematic . This circuit will turn on /off an electronic relay using the same ...

This is a simple clap switch circuit with high sensitivity. The only unusual component is the single coil latching relay. While there are numerous means of generating the latching function, the ...

The circuit is quite old using CMOS 4081 with 4 ‘AND’ gates to hardwire the access code. [myvideoisonutube] references [Ron’s] “Enhanced 5-Digit Alarm Keypad” schematic for this build ...

There are other tricks you can use. Diodes can handle some simple logic functions ... for memory and control circuits. This isn’t just in the realm of theory. Many relay computing devices ...

Achieve max electric fuel pump output and safety using ... the relay is not energized (not used in this application). Other similar form-factor ISO relay variations may have only NO or NC circuits ...

The use of high-energy transient absorbers usually meets the former requirement, while an electro-mechanical relay handles the latter. The circuit described ... relay with a simple RC timer ...