Convert 2.9V to 5V to operate relay using limited resources
55457
How to control 4 relays with a not chip (7404)
80449
DIY 24v to 5v usb phone charger
102460
Raspberry Pi + IRFZ44N to control a 5050 RGB LED strip: current seems to be limited
131875
Convert line voltage heating system to use low voltage thermostats
32052
how to reduce DC voltage using resistors?
93077
Insufficient voltage to dryer receptacle; what next?
140985
Relay(or Alternative of relay) without pull-back feature
116678
How to simulate simple on/off, Single-Pole-Single-Throw switch?
137407
Switch between two power supplies
156010
Using a diode to ensure current flows in only one direction, without causing a voltage drop
132950
Scale 30-50 mV signal to 0-5 V range
65365
How does USB Power Delivery work with voltages above 5V without damaging 5V peripherals?
134426
How do I convert, lower, or raise voltage?
136436
Designing 12v DC UPS
79771
MCU 3.3v to 5v Relay Driver, MOSFET or BJT
142418
Can you split power between two voltage regulators?
154111
Max. switching current in relay