Hi all,
I am very into electronics.
I was learning about relays.
Couple of questions popped up.
1. In normal one channel relay module- when you turn the switch on- the battery powers the coil which in turn shifts com to no.
Now in case of radio frequency 1 channel relay module- when i connect the battery- the red light is on. After i press the switch of my transmitter- then the com shifts to no.
The question is- despite being powered on by battery (red light on) is there any mechanism in rf module that keeps the coil off and only turns on/powers the coil after I press transmitter switch which causes com to no shift?
Could someone please tell me what that mechanism is?
2. If I want to control an led light woth rf relay module- in com which part should i connect? Positive or negative? And in case of no/nc which part should I connect pos or neg?
3. In which case do I need to use external power source in addition to the 12v dc battery in relay module eg: rf 433..
And in which case I can only use the source battery for both turning the relay and load on?
I will be forever grateful if you could answer me the questions. Thanks in advance
I am very into electronics.
I was learning about relays.
Couple of questions popped up.
1. In normal one channel relay module- when you turn the switch on- the battery powers the coil which in turn shifts com to no.
Now in case of radio frequency 1 channel relay module- when i connect the battery- the red light is on. After i press the switch of my transmitter- then the com shifts to no.
The question is- despite being powered on by battery (red light on) is there any mechanism in rf module that keeps the coil off and only turns on/powers the coil after I press transmitter switch which causes com to no shift?
Could someone please tell me what that mechanism is?
2. If I want to control an led light woth rf relay module- in com which part should i connect? Positive or negative? And in case of no/nc which part should I connect pos or neg?
3. In which case do I need to use external power source in addition to the 12v dc battery in relay module eg: rf 433..
And in which case I can only use the source battery for both turning the relay and load on?
I will be forever grateful if you could answer me the questions. Thanks in advance