I am having an issue with an RF receiver being used with an HT12D decoder IC. When I power the circuit with 5V (recommended for the RF receiver), it works with the transmitter as it should to control a small LED bulb. However, the LED light I want to control needs closer to 12 volts to illuminate. I modified the circuit (see attachment) and it is now powered by approximately 10.86V (8 rechargeable AAs w/ full charge). A 7805 voltage regulator decreases voltage to the RF receiver to approximately 4.99 volts. The HT12D is now powered by the 10.86 volts, and is no longer functioning properly. My question is, since I have increased the voltage to the HT12D, do I need a different resistor value on pins 15 and 16 of the HT12D? If so, how do I calculate the value? Please let me know if further details are necessary, as I am sure I have left something out.