Recent content by Birck

Thanks for your help. I should be able to manage that.

The only specifics I have are for one LED, alone, which requires 2.5-3 volts @ 20 mA. Far as I can tell, the rest of the circuit consists of a USB connector, an Arduino Micro microcontroller board, and a 4-pin OLED, requiring 2.8-5Volts (amps not indicated). The board itself draws 40 mA @...

Thanks for that detail. So now I have two possible ways to deliver smaller voltages to more than one device- an LDO and a linear regulator. Or are they one and the same? Whichever, I know I also need a substantial heatsink, which I would not have thought of. Thanks again.

You are correct. It's easy to forget about the "diode" part of "led". I'm learning.

OK. Thanks for pointing that out.

I did some digging and found that I can probably get along without divvying up the supply voltage-the circuit I've been modeling mine on is based on an Arduino Mini, which has its own USB connector, and stays within the limits of USB power. The only other power required is for an LED...

Right. I need to get the specific power requirements together.

Thank you for the information. I will gather all the power requirements and get that info back to the forum.

I have no BG in electronics beyond tinkering. I'm strictly a hobbyist of a certain age, retired, hoping that I can die a natural death far in the future. To that end, I have put together an isolation transformer set (two identical transformers linked back-to-back) in order to complete the design...

Hello, I'm putting together a shutter-speed testing device. I have the schematic at hand, but my question is this: If I need to power two or three different devices in a DC circuit, each with low, but slightly different voltage requirements, can I do that by using a single powerful enough DC...