The diagram below is the relay driver circuit with Snap Acting for the clean switching of the relay. When the input signal at the base of T1 decreases, it turns off allowing T2 to conduct by giving ...

In preparation for some of the more advanced relay drivers I will be posting in the future, I have listed a few basic relay drivers for your reference. Included are the following: High side toggle ...

Figure 2 shows the (Spice simulated) timing diagram of the voltages on the relay coil and on the I/O pin of the DS2405. There's a negligible delay between input and output.

With the source taken care of [Glitch] uses an optoisolator for both protection and level conversion. After working the bugs out of the design he was able to control the relay using 3.3V, 5V, or 12V.

The relay driver is offered in single and dual driver configurations, housed respectively in SOT23 and SOT26 packages, and can replace between 3 and 6 discrete components. With a Zener diode ...

Allegro ’s A2550 automotive relay driver incorporates a 5-V regulator. Large numbers of relay-based applications require the use of a microprocessor that implements a complex system control.