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Will a 12v relay work with 6V?
This circuit allows a 12v relay to operate on a 6v or 9v supply. Most 12v relays need about 12v to “pull-in” but will “hold” on about 6v. The 220u charges via the 2k2 and bottom diode.
Will a 12v relay work with 5V?
Advanced Member level 5. You cannot activate a 12Vdc relay with 5V.
How many volts does it take to change a 12v relay?
The nominal voltage of a 12V relay is 12V, so 80% of this is 12 x 0.8 = 9.6V. So in theory, this relay should activate at 9.6V.
Can I use a higher amp relay?
Relays are used when you need to switch higher currents than a switch can handle, or when you want to isolate an electrical circuit. Our relays have either 5 contacts or 4 contacts. Even higher power switching is available in our 4 pole 80 amp relay and 200 amp relay.
How many amps does a 12V relay use?
The current draw of the coil is not normally shown but is typically 150-200 mA with a corresponding coil resistance of around 80-60 W. Tip: Knowing the coil resistance is useful when testing the relay for a fault with a multi-meter.
How much voltage is needed to change a relay?
Most are rated at 12v, usually a range of 12-15v. Actual voltage required to operate the relay is usually a little under 12v. That is why your accessories can still operate with the key on and engine off, usually making actual voltage a bit under 12v with lights on.
Can you use a 24V relay for 12V?
Once the relay has pulled in, most “24V” relays will hold in quite satisfactorily on 12V or even less. If a low-side switch is what you need, simply connect Fig,1 to a 12-13.8V DC supply rail and most 24V DC relays will function almost as normal.
What kind of power do I need for a 3.3V relay?
Usually, you’re ging to power the 3.3V device from something like 5V USB or 9V plug. These sources can often provide the power required to energize the coil of your relay. You will have to make the control signal of your board and switch the “input power” over the coil of your relay.
Can a 5V relay be used with a 3V Arduino?
You could consider something like this: http://www.ebay.com/itm/5PCS-3V-3-3V-Relay-High-Level-Driver-Module-optocouple-Relay-Module-for-Arduino-/331413255692 It has an optocoupler, to isolate the arduino from the actual relay. It might be better to get one that actually works on your battery voltage range.
What kind of relay do I need for my Arduino Pro Mini?
Your best bet would be a “solid state relay”, since these do not require a coil to be energized and may work on low voltage/current. Check the specs to find one that fits your needs. Usually, you’re ging to power the 3.3V device from something like 5V USB or 9V plug.