Hi,

I need a little help. I have a NAND gate. Output of that NAND gate will activate a relay. I have bought this relay https://www1.elfa.se/data1/wwwroot/webroot/Z_DATA/03716206.pdf


Do you think you can help me with which other things i have to use to activate the relay? NPN or resistor?

Thanks

 

What is the part number on your relay? Is it a 5V?...12V?...24?
Do you want the relay to be activated with a high out of the NAND gate or a low?

Ken

 

Use an NPN transistor like BC337, BC548, SL100 and connect as follows.

Emitter to GND
Base to NAND output through 1-10k resistor depending upon supply voltage.
Collector to relay terminal
2nd terminal of relay to +12
Also dont forget a reversely connected protection diode across the relay.

What is your supply voltage? For 12v, use a 12volt 200 ohm relay. No of poles depends on your application.

The above connections are for a high out which is what you need I guess. For a low out, Use a PNP and reverse connections.

 

What is the part number on your relay? Is it a 5V?...12V?...24?
Do you want the relay to be activated with a high out of the NAND gate or a low?

Ken

www.elfa.se
Part number: 37-162-06

Relay will be activated on high out of NAND gate.

 

Supply voltage is 6V.

 

This should help you when driving relays.. For 6V, use 1k or 3.3k resistor instead of 10k..

 

Thank you all. I think you all have given enough information so it will work.