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Conver TTL into Relay

I am using USB 6501. I wish to convert TTL signal into 8 nos. Relay output. The Relay I using is % V Dc Omron Relay with 40mA Current capacity.

Pl advice to use current booster and how to put into Circuit?

Regards

Sandesh
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Message 1 of 38
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Hi Sandesh,

A simple relay driver.

Message Edited by K C on 10-26-2007 08:55 AM

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Message 2 of 38
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Hey KC!

Sincere Thanks for posting this driver circuit. Firsr can you tell me whether such Driver Circuits is available readily in Market?

Secondly Pl. intimate the Transistor no. and I trust you have mentioned 2K resistor across the TTL and 0V.

Pl. confirm.

Regards

Sandesh
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Message 3 of 38
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I am sure that these devices are on the market, but you have to look for yourself.

The transistor is a standard NPN. a 2N2222A will do.

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Message 4 of 38
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Dear KC,

Do you know any IC which can give 8 drivers.

And may ask your base country?

Regards

Sandesh
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Message 5 of 38
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Something like ULN2001, but if your are not that familiar with electronics should you even try it ?  Smiley Surprised
 
I am living in The Netherlands
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Message 6 of 38
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Dear KC,

If you tell me the input and out put conncetion leads then I can use IC.

IC datasheet is available on RS site.

Regards

Sandesh
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Message 7 of 38
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Something like a ULN2001.... you should use a ULN2003 for your circuit.

Here it is for 1 relay.

Message Edited by K C on 10-26-2007 04:23 PM

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Message 8 of 38
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This is great. This circuit will give 7 nos. output. Is there any IC which will give 8 nos. output?

I am going out of station and hence may not able to reply for 5 days.

Regards

Sandesh

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Message 9 of 38
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Try ULN2803A

 

Message Edited by K C on 10-29-2007 09:26 AM

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Message 10 of 38
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