Figure 3 is typical of wiring diagrams found in a service manual. Relays and switches are shown in their “open” position, and color is not used to indicate where power or grounds are present. When ...

In my previous “How to Read Data Sheets” column on Relays, I was evaluating a relay-based implementation of a battery protection shutoff system. Toward the end of that column I said: “So, this relay ...

As I was finishing my previous column on reading data sheets for power MOSFETs, which was targeted toward implementing a battery protection shutoff system, I noticed several EEWeb articles on the ...

The Right Way to Hook Up a Relay to 12 Volt Power. While you might be tempted to just run the positive wire from your relay directly to the positive terminal on the battery, that is a big no-no.