A relay 5v is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal.
Relays work on electromagnetism, When the Relay coil is energized it acts like a magnet and changes the position of a switch. The circuit which powers the coil is completely isolated from the part which switches ON/OFF, This provides electrical isolation. This is the reason we can control a relay using 5V’s from an arduino and the other end of it could be running an 220 to 240V appliance, the 240V end is completely isolated from the 5V arduino circuitry.
Features of Realy 5v
- Comes fully assembled
- Supports any microcontroller or TTL signal. 3.3V and 5V supported.
- Relay current consumption at 5V is 75mA
- Red LED On Indicator
- On-board switching transistor.
- On-board back EMF protection.
- Easy 1 wire drive. High for on, low for off.
- Size 34mm long x 27mm wide x 17mm high
- 4 Mounting holes
- 5V relay
- can be used as a microcontroller development board module can be used as a home appliance control
- 5 V-5v TTL control signals
- control DC or AC signal can control the 220V AC load.
- a normally open and one normally closed contact
- a power indicator
- control light, bright pull, disconnect does not shine
- the increase in transistor drive a relay coil, control pins high impedance.
- the control pins with pull-down circuit, prevent floating relay malfunction
- high quality, pin colors (black, yellow) were shipped.
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