New answers tagged voltage-regulator
0
votes
How to build a voltage level shifter that shift 3.3V to 6.6V and vice versa
Bottom MCU output is voltage source V3. Top MCU inputs are nodes in1...in3. Diodes shown are the MCU's input protection diodes, could also be added as BAT54S for example.
On the left: capacitive ...
- 81.6k
1
vote
How to build a voltage level shifter that shift 3.3V to 6.6V and vice versa
This simple solution isn’t sufficient?
Even with “slow” BC847 & 857 it can be used up to 500kHz.
500kHz input signal:
(Blue is input, green is output)
Edit:
There is an option to use a two NPN ...
- 2,881
1
vote
How to build a voltage level shifter that shift 3.3V to 6.6V and vice versa
Voltage Source Offset
The following two circuits add a 3V "floating battery" (1mA flowing through R2, R4) between the top and bottom nodes.
The circuit on the left passes signals from top ...
1
vote
How to extend the input range of a linear voltage regulator?
Extending the Input Voltage Range of an LDO Regulator by Jeff Fallin at Application Report SLVA119 - September 2002 (TI publ.):
Use: mosfet + zener || voltage divider + capacitor = voltage drop ...
- 11
1
vote
Led light driver output voltage rise to 300vdc
LEDs have a very nonlinear current-voltage characteristic. Let me dust off my whiteboard.
The I-V curve for a LED, like most diodes, has an exponential dependence on voltage.
If you connect a voltage ...
- 23.1k
-1
votes
Is there any component that opens or closes at the exact defined or set voltage?
Check out, for example, the LM185/285/385 family of fixed and adjustable pseudo-zener-diodes.
- 3,949
1
vote
Is there any component that opens or closes at the exact defined or set voltage?
Depending on what you are really after, it may need a whole circuit with multiple components to do what you want.
For example a comparator can be used to have an output depending on how two monitored ...
- 172k
6
votes
Power issue with PCB board using a DC-DC converter
The root cause is, the battery is incapable of powering your circuit.
Even a brand new CR1220 battery has typical internal resistance of 20 ohms, rated current of 0.05mA to 0.1mA, maximum continuous ...
- 172k
1
vote
Accepted
Headlight burnout
If a recall was issued it should still be possible to purchase the repair part, even if you no longer qualify for free service.
Check that the alternator wire is intact.
- 36.4k
0
votes
LDO Output Capacitor Selection and ESR Consideration
I'm unable to answer all questions directly, but I suggest to:
stick to the output capacitor requirements given in the datasheet of your specific LDO.
test your design with load transients and check ...
- 171
0
votes
Powering STM32WB55 with Alkaline Batteries
Answer to question 1: Yes, you can make all your devices run with this power domain BUT you need to consider about current not just voltage. Radio modules draws so much currents while transmitting. So ...
- 100
2
votes
Accepted
What is this 6-pin SMD IC marked IV7NM?
It is a MP2451DT Step down converter from MPS.
"V7" is the significant marking, the vertical bar in the left is pin 1 indication.
Picture from lcsc:
- 1,468
Top 50 recent answers are included