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I am using a 5pin 6v relay in an analog circuit application. This is my first time to use a relay. I heard that there is a relay driver. Is it necessary to use a relay driver along with relay. Its a 5 pin relay, 6v And analog application, not a digital. Only 2 transistors included. Automatic street light design using ldr and BC547 transistor. Thanks in advance.

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  • \$\begingroup\$ No it's not. Nobody can make you do anything. Now please read your question back to yourself and think, "How could anyone guess what I am talking about?" Then edit your question, explain what you are trying to do and add a schematic diagram. There's an 'add schematic' button in editor toolbar. You'll get help then. \$\endgroup\$ – Transistor Dec 19 '15 at 20:11
  • \$\begingroup\$ Relays have been around for much longer than those newfangled relay drivers .In your simple application it would be easier and cheaper not to use a relay driver. \$\endgroup\$ – Autistic Dec 19 '15 at 20:48
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A relay coil just needs some specified current for the relay to turn on. Since the coil resistance is usually well known, this may also be specified as a voltage. As long as you can produce that voltage at that current, you can drive the relay.

The rest of your question makes no sense, so is ignored.

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