@AmFlyer posted:Ray, that is what GRJ posted above. 18VAC RMS into a full wave bridge outputs about 17VDC. There is about a 1V drop across the diodes. If we add capacitors to smooth the waveform it basically makes the output DC voltage equal to the peak voltage input rather than the RMS voltage. For a sine wave, peak is 1.414 times the RMS voltage, hence GRJ's 25 to 26 VDC.
There are two choices, add an adjustable voltage regulator or set the input (track) voltage to 13VAC. The problem I have found with 13VAC on the track is the electrcouplers on the Legacy engines do not reliably fire.
Being in and out all day I missed John's post, I will look into a linear regulator, don't want to cook my Blunami
@gunrunnerjohn posted:Be careful rectifying 18VAC with a bridge and filter cap, the output voltage will be around 25-26 volts DC. That exceeds the Blunami maximum voltage of 22 VDC. You should add a regulator of some type instead of using raw DC.
Thanks John, sorry, I had missed your post.
Ray
