Can a relay be switched continuously?
126826
Should I run a relay continuously?
143815
Automatically switch to a saved wireless access point with the strongest signal
84467
How can I rewire half switched receptacles?
88902
battery backup supply switch over design
51977
Switching between 2 power supplies upon dropping below cutoff voltage efficiently
111778
What are the differences between an AC and DC coil relay?
108443
BJT as a switch: what am I doing wrong?
121865
BJT in Reverse Active Mode of Operation
151393
Toggle Switch to swap the connections of two buttons
105529
Detecting state of LED to control another circuit
28609
How to switch 7 wires with a single on/off slide switch
92681
Controlling Two Circuits with One Switch
55457
How to control 4 relays with a not chip (7404)
6152
Automatically switching from 9V battery to DC wall adapter on insertion
156353
Why does a relay have a minimum applicable load?
157737
Why are switchers more efficient than linear regulators?
120817
Why does my computer keep switching on?