Hello all and thank you for taking the time to read this and help me. I have a circuit that i pulled out of a LED strobe. It is a RF reciever for the matching key fob. The model number on the circuit is SR9915 V3.2 The circuit has 7 pins, theres a positive, a negative, one unused pin(I dont know what its for) and 4 output pins. Now my problem is that when the circuit is powered on the outputs are active negative, and when a LED is connected to +5v and the negative of the led is connected to one of the 4 pins the led will light up continuously until i hit the corresponding button on the key fob, it will then turn the led off as long as i hold the button down but when i let off the button the led lights back up. What i need is a circuit that will convert that closed circuit to an open circuit so the led will stay off when the device is on but when the button is pushed it will turn on and stay on until i hit the button again to turn it off. And i need to do this on all 4 channels. I used a LED just to explain but i will actually be using a transistor to power a relay on each channel. I want to be able to have the relay constantly off while the device is powered on but when the button is pushed the relay close and stay closed. Is there a circuit i can use to do this? I dont have a schematic for this since it was pulled from some chinese led strip but if it will help i can provide pictures and i will include a link to a page i found bout this chip. Thanks in advanced!
http://translate.google.com/transla...r9915+rf&hl=en&rlz=1T4TSNB_en___US356&prmd=iv
http://translate.google.com/transla...r9915+rf&hl=en&rlz=1T4TSNB_en___US356&prmd=iv