Relay Driver/buffer 12V
Relay Driver/buffer 12V
(OP)
Just need some help in identifying a popular semiconductor package(preferably NTE) to drive a 12V relay (approx 200mA) from a very low current +12V input
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Relay Driver/buffer 12V
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Relay Driver/buffer 12VRelay Driver/buffer 12V(OP)
Just need some help in identifying a popular semiconductor package(preferably NTE) to drive a 12V relay (approx 200mA) from a very low current +12V input
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RE: Relay Driver/buffer 12V
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http://www.cel.com/pdf/datasheets/ps7113.pdf
http
http://www.cel.com/pdf/datasheets/ps71221.pdf
etc,etc.
RE: Relay Driver/buffer 12V
A generic answer would be something like the venerable 2N2222. Since you want to buy from NTE, that would be a good place to start. If you are just building one, a catalouge shop cross reference should be OK. The IRF type FET's with logic drive might be easier for you and not cost much more, it depends on your sensitivity of NRE to production part costs.
RE: Relay Driver/buffer 12V
Thnaks
RE: Relay Driver/buffer 12V
http://www.onsemi.com/pub/Collateral/AND8116-D.PDF
This if for an ON semi automotive version NUD3124.
If the 12 V is realy a ra 12 V with glitches and noise and large swings in voltage from charging and EMF during operation, you might have to take some other precautions.
RE: Relay Driver/buffer 12V
Drive it directly. If you must use your existing relay just use the smallest one to switch It. This gets you robust screw terminals and mounting holes that are fit for mounting on or around engines using ring connectors.
Something like:
http://dkc3.digikey.com/PDF/T053/1401.pdf
RE: Relay Driver/buffer 12V
RE: Relay Driver/buffer 12V
reasonable beta. Suggested:
NTE196/331 = TIP41
NTE181 = 2N3055
NTE261 = TIP125
Any of the above (and scads more) should be suitable.
If the base current becomes a problem, use a 2N3053 or
3054 (progressively larger), or in extreme cases, use
a 2N2222 (as suggested) or 2N4401.
You can look up the NTE equivalents yourself; they have
a cross-reference page.
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