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Reply to "Dimming car lights from block control"

I didn't notice the other one was a different chip, here's eBay: 143186914163 that uses the LM2577 regulator.

I just ran a quick test on the buck/boost module and it does not exhibit any bad behavior. I see no spikes in voltage anywhere in it's range.

It's set at 12 volts and has a 48 ohm load, so it is supplying 250ma.  At around 3.4VDC, it starts regulating, though it's slightly low in output voltage to start.  By around 3.6VDC on the input, it's up to the 12VDC output and that holds all the way to 24VDC on the input.  Coming back down, at around 3.4VDCinput the output voltage starts falling. 

Obviously, with a 250ma load on the output at 12V, I'm seeing around 1.4A at 3.5VDC input, reducing to around .14 amps at 24VDC input.

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