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110vac to 110vdc conversion

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b madhu

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Please help me to convert 110vac to 110vdc.by adding one diode can it be satisfied???
 

b madhu said:
Please help me to convert 110vac to 110vdc.by adding one diode can it be satisfied???
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Single diode (or half-wave) rectifier will produce on a resistive load an average voltage Vdc of 0.45xVac and average dc current Idc of 0.64xIac ..
Full wave bridge on resistive load gives you (average) Vdc=> 09Vac and Idc=>0.9Iac ..
In both cases, when you add a smoothing cap the voltage (with no load) rises to Vdc=> 1.41xVac .. and currents (1diode) Idc=> 0.28xIac and (4 diodes bridge) Idc=> 0.62xIac ...

Depends on what you need ????
:wink:
IanP
 

This schematic shows a half-wave power supply with a load sufficient to draw down the supply level to 110 VDC.



Some amount of impedance is usually in the power supply.
I installed a 3 ohm resistor to represent this.
Anyway it limits current to a reasonable amount, because much more current would be liable to trip a circuit breaker.
 

jeffrey samuel said:
better to go for full wave rectifiers as they have higher rectification rates than other designs
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Technically speaking, a single-phase (one-diode) rectifier will charge the DC-output capacitor to the peak voltage of 110 VAC, 160 V DC approx. If you discharge this capacitor by a load current, the voltage will decrease. This effect depends upon the capacitor value and load current.
You can use a two-phase(bridge) rectifier to reduce the voltage decrease by load current.

As you presumably prefer to use no AC insulation transformer, the complete device is VERY DANGEROUS.
I will never recommend to anyone to even test it. Please ALWAYS use insulation transformers, to separate AC mains from the rectifier ad the load.
 

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