You can use that circuit to drive a relay of 12 V with a trigering signal of 5V. It uses 2 diodes 1N4002, 1 transistor 2N3904 and two resistors. By changing the resistors value you can change the input triggering voltage.
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New Circuits Main Categories Articles / Projects Relay-Driver Applications description/ordering information. The ULN2001A ... Applications include...
By integrating a complete solid-state relay driver into a single surface mount package, DRDC3105 ...
Hi all Thanks for having a look. This instructable is a follow up to my old clap-clap relay drive...
The DRDC3105 integrates a complete solid-state relay driver into a single, surface-mount package,...
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