The low-voltage tag has no wiki summary.
5
votes
2answers
93 views
Mains to low voltage seperation between FR4 PCB layers
I cannot find clear information on running mains and low voltage on adjacent layers on FR4 PCBs. I understand how much creepage distance to allow, but for example, can I run - 50Vdc, 240Vac, 0Vac, ...
1
vote
2answers
60 views
VDC for little centrifugal pump. How much tolerance?
Can I run a little 7 VDC (1.2 watts) pump with a 9 VDC/0.5 Amp power supply? (The pump is for a drip to attract birds.)
13
votes
3answers
486 views
Why do many electronics operate on 5 AND 3.3 Volts?
Many modern appliances use a 5V Power connection. Internally they are working with 3.3V. Wouldn't it be easier to have 5V everywhere?
Examples are many USB devices or Routers (they use 5V for power ...
9
votes
1answer
166 views
How to interface with ultra-low voltage microcontrollers?
Cypress has PSoCs which can operate at 0.5V power supply. I was wondering how you interface these. 0.5V is too low for FETs and bipolar transistors, LEDs and even common diodes. So what ways are here ...
