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Dear Friends,
As we know, for varing rms voltage of AC load, we can use dimmer.
what changes should we do to have bellow voltage on DC load?
Any helps will be appreciated.
Thank you
Assume A/D with below specification:
AVCC: 5V
Resolution: 10-bit
as we know for conversion of max. 5 VDC, the accuracy is 5/1024= 5mV. but for conversion of 30 VDC, we have to decrease 30V to 5V and after conversion, multiply it to 6. therefore the accuracy will down to 30mV.
is there a way to...
1- Elements have been soldered on PCB so intermittent and uncoated contacts is not possible.
2- Volt meter is calibrated KYORITSU multimeter with 0.1 mV accuracy.
3- Compensated Resistor R3 is also applied by paralleling R1=15K and R2=390K.
I also bulit up similar application with AD620...
Thanks for your reply
Measurement tools are calibrated and verified. Resistors are Axial 1/4W, 1%. and input level is permanently fixed over time.
How is it possible to compensate drift ?
Gain changes in simple inverting-Amplifier over time
I built up simple inverting-Amplifier with LM358 which Gain is R2/R1 = 26.
input voltage is 20mV fixed and hence output voltage should be approximately 520mV. the problem is that the output voltage changes over time while the...
Hi buddy
Assume we have a square wave with specification bellow:
frequency: 400Hz
duty cycle: 50%
Positive peak voltage: +24V
Negative peak voltage: -20V
I want to remove DC offset voltage and supply 50 ohm load. I'm not sure if I can remove offset voltage with capacitors; because in negative...
therefore, for using 78M12, we always should use copper aria as heat-sink? actually I used copper aria, but because of limitation, it is around 4x4 mm2.
I presumed that maybe it is because of some problems with my design!
I implemented circuit in which 78M12 package is DPAK and can deliver up to 0.5A. After implementation, I encountered that 78M12 regulator get too hot. anybody know why and what is solution?
@BradtheRad, I simulated your design in post #30. in your schematic, desired output will be achieved if power stage consists of BJT transistors and precise value of base resistors.
Assume switching by MOS transistors which deliver 0~24V pulses to multiplier stages. I simulated it by square wave...
I implemented Buck-Boost inverter topology with LM2576-12 from National manufacturer. I applied +28V input voltage and I could deliver -12V output without any problems. however I didn't see Buck-Boos inverter for LM2576-Adj in datasheet. can I use this topology for LM2576-Adj or not?
with falstad simulation ofcourse
The schematic in post #15 was come from this article:
"High-Efficiency, Regulated Charge Pumps for High-Current Applications" By Brigitte Kormann, 2003
in the page #3 of this article, you can see "1.5-times transfer charge pump" topology.
It is perhaps that this...
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