I have a garage door opener for which I need to replace the radio receiver. The opener outputs a DC supply voltage for a receiver at 34 VDC. The receiver has an input range specification of 12-24 V AC/DC.
I'm attaching a photo of the receiver's input stage below. It consists of an MB6S bridge rectifier and a 78L05 (SOT-98) linear regulator with 5 V output.
According to the datasheets I could find for the 78L05 it has an input-voltage range of 7-20 V with 30 V absolute maximum. It has 220 uF/50 V input and output filter caps and apparently a 51 R series input resistor. The receiver has a specified input current of < 10 mA.
What would be the simplest modification or addition to the receiver's input that would make it compatible with the 34 V supply voltage?