Hi friends in am building up an rf transmitter and receiver circuit ht640and ht648l
i m using 12v battery for the circuit but can i use rws 434 rx at 12 v supply ??? if no which resistor should i use to limit the supply please help ........
how much volt does it require for proper reception and transmission ????
sir i hav connected 78l05 to the circuit and its giving 4 - 5 v output but still the circuit is not working i have used the following link to build the circuit but still its not working how shal i test the circuit
Read the data sheet, for the receiver the minimum voltage is 4.5v, you have 4v.
How do you expect it to work correctly?
If the outout of the 78L05 is only 4 volts, something is wrong:
1/ It is faulty.
2/ It is connected the wrong way round. (Which will probably result in 1/ )
3/ There is insufficient voltage on the input.
4/ Something is taking too much current from it.