Questions tagged [voltage-doubler]
For questions about circuits which produce an output voltage that is double the input voltage, usually using a combination of capacitors, diodes, and/or transistors.
69
questions
2
votes
2
answers
52
views
Charge pump understanding question regarding PWM duty cycle and PWM voltage level
I am playing around with charge pumps / voltage doublers for the first time and have some questions that I can't find anything online to.
First, I have a standard charge pump, in an ideal world the ...
- 69
1
vote
0
answers
73
views
Voltage doubler waveforms
A voltage doubler is connected like this (the voltage source in series with the inductor simulates transformer output):
After stepping the load (100k, 1M, 10M, 100M, 1000M) the waveforms look like ...
- 877
-1
votes
1
answer
90
views
Why don't the C1 and C2 capacitors discharge? [closed]
In the circuit, we know that when D1 is connected then the C1 capacitor is also in the circuit until it's fully charged. Why when D1 is disconnected and D2 and C2 are in the circuit, C1 can't ...
1
vote
1
answer
186
views
Voltage Doubler capacitance calculation
I have an astable multivibrator that produces 5 V square wave input to the push pull and the voltage doubler part of the circuit. Now somehow the simulation works at 0.1 uF capacitors for the voltage ...
0
votes
2
answers
153
views
Voltage not varying with duty cycle
I want to make a circuit that changes voltages with the duty cycle as well as doubles that for me. I therefore made a voltage doubler circuit along with alternating PWM wave. But as I changed the duty ...
- 669
3
votes
2
answers
221
views
Why need voltage doubler when transformer can be made for full voltage
I have seen old vintage tube power supply (for example Heath HP-23A), that transformer secondary is roughly 300v RMS and a voltage doubler is used at output to obtain 750+ V DC for vacuum tube anode. ...
- 337
1
vote
3
answers
151
views
Voltage doubler circuit working
I understand that when the voltage at the anode of the first diode is greater than the cathode it turns on, however immediately after the first two positive cycles, how does the diode turn on?
It ...
5
votes
2
answers
629
views
Having trouble understanding textbook explanation of "hot chassis" in full-wave voltage doubler vs half-wave
The textbook explanation is not doing it for me.
The half-wave voltage doubler shown in Fig. 4-27(a) offers some improvement in safety over the full-wave voltage doubler. Compare Figs. 4-24(a) and 4-...
- 61
0
votes
0
answers
61
views
How to select caps for voltage doubler at RF frequency for DC current output?
High-frequency AC transformer output hooked to half-wave DC voltage doubler. Current through is 6 A to LOW frequency switching load.
I assumed there was enough 20 kHz time to keep the second cap ...
- 1
5
votes
1
answer
393
views
TC962 Voltage Doubler - Why the slightly lower output?
I am prototyping this voltage doubler circuit based off the datasheet of the TC962. Capacitors are GRM21BZ71E106KE15L. When applying 9V at the input, the output is 17.96V at no load. When drawing ...
- 153
0
votes
0
answers
876
views
Circuit design options for 58V lithium battery charger
I have an Echo 58 volt chainsaw and the battery charger has malfunctioned so that it no longer charges the battery pack. I have been charging it by using a 2A current limited lab power supply set to ...
- 7,475
1
vote
3
answers
922
views
Boost Converters v Voltage Doublers
Can you explain the basic reason why boost converters seem to be more popular than voltage doubler circuits for load bearing output?
I have built these two circuits in the simulator and they both ...
- 339
0
votes
1
answer
53
views
+/- 12v supply for AD8421
I need +/- 12 Vdc power supply for AD8421 from 5 Vdc. Can I use LT3582 (with output +/-12 Vdc; 85 mA) to supply the AD8421?
Thanks.
- 107
1
vote
1
answer
124
views
Voltage doubler current halving
I'm trying to understand how a voltage doubler using a switched capacitor circuit affects the charge being distributed from the input to the output.
simulate this circuit – Schematic created ...
- 2,432
0
votes
1
answer
102
views
Help with voltage doubler in a WPT application
I need some help with this schematic to have higher voltage at Vrect. This is for charging a receiver at 25 mm in a WPT application. I was expecting a voltage of 2Vin at the output of the voltage ...
