Relay help

Is this what you are trying to accomplish?

When the Green circuit is OFF by the switch -  the Red Circuit is ON by the relay.

When the Green circuit is ON by the switch  - the Red Circuit is OFF by the relay.

The NO contact on the Relay stands for Normally Open

The NC contact on the Relay stands for Normally Closed

(With Normally meaning the state when there is not power to the relay coil.)

Hi,

you don't need a relay.

Use just a double switch.

If you use lamps you can use  an AC supply.

If you use LEDs you have to use DC,

or if you have AC then you needs anti parallel diodes to the LEDs.

The right value of the R must be calculated for the LED current and supply voltage.

The anti parallel diode can be 1N4007 (1N400x).

Best Regards,

Gerald

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Hi,

you don't need a relay.

Use just a double switch.

If you use lamps you can use  an AC supply.

If you use LEDs you have to use DC,

or if you have AC then you needs anti parallel diodes to the LEDs.

The right value of the R must be calculated for the LED current and supply voltage.

The anti parallel diode can be 1N4007 (1N400x).

Best Regards,

Gerald

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When using a two pole switch there is a transition zone where both the green and red circuits are either both on or off.

The question is worded that the red circuit is monitoring the status of the green circuit.

I have merely demonstrated a master monitoring configuration.

If you want a changeover switch just use a SPDT (Single Pole Double Throw) switch.

Hi,

COMPACT wrote:

 

When using a two pole switch there is a transition zone where both the green and red circuits are either both on or off.

The question is worded that the red circuit is monitoring the status of the green circuit.

I have merely demonstrated a master monitoring configuration.

yes, this also happens with your SPDT. - between the two contacts the circuit

will be interrupted for few ms, or sek, therefore the user as fast moves the switch lever.

A parallel capacitor can help as a drop delay.

Monitoring of the green circuit i also thought about, but we don't know specifically.

He's question was a little bit vague. "one circuit;;; other circuit"

- I've also drawn my schematic with two supplies and one with SPDT but I've not posted it because i thought the above may enough.

Then the solution above with an relay or transistor may possible.

Best Regards,

Gerald

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