Full wave rectifier vs bridge rectifier?

[capwizard]

Re: Full wave rectifier vs bridge rectifier?

This car Amp I use my PoorMan's ATX power supply keeps cutting off the ATX power supply. I will need more current for start up the Car Amp.

PS: In the picture show 0.2A but the surge current keeps on cutting the ATX power supply? With the one I just fixed, Amp. works flawlessly?

[petehall347]

Re: Full wave rectifier vs bridge rectifier?

try NTC resistor to slow down power up .
this might be interesting ..http://nevarllajf.com/daniel/?page_id=44

[capwizard]

Re: Full wave rectifier vs bridge rectifier?

"two large 5W, 10 ohm resistors in series with the positive and negative supply, after the rectifier bridge. Over each resistor, a relay was added." Good idea!

My Poormans ATX power supply 12 v rating is 14A, maybe the ripple protection circuit too sensitivity.

PS: Look this one 12v 150A. (pic1)

Sneak Peak – Ultra Products 2000W ATX Power Supply
http://www.legitreviews.com/sneak-pe...lIkhrsdMmVO.99

[petehall347]

Re: Full wave rectifier vs bridge rectifier?

my room heater is 2kw
better to use atx to keep car battery charged up .. then amp should always start up if you dont run it for long

[capwizard]

Re: Full wave rectifier vs bridge rectifier?

Very good idea, I Can put three 18650s or any small 12v battery connects to the 12v output terminals of the ATX power supply, acts as A big capacitor to absorb the surge current.

[petehall347]

Re: Full wave rectifier vs bridge rectifier?

car amps are expecting a large reserve supply . big capacitor might do it or lipo battery ..
atx supply is weak link here .. be gentle with it ..keep the bass down and use high ohm speakers . i used to run everything from 12v for years then i got mains supply again .. 48v supply is much better .i will go for that if i lose mains again .

[capwizard]

Re: Full wave rectifier vs bridge rectifier?

"i used to run everything from 12v for years" .....wah..........You live off grid, with Solar or RV mobile home?

[budm]

Re: Full wave rectifier vs bridge rectifier?

To eccerr0r: my next project is the 40A 12v or 96v 5A (lots combinations) power supply. it needs eight 12V 5A AC Adapters, I still collect them. It is A Universal AC Adapter Modular Power Supply.

PS: Use four 12v 5A AC Adapters (up to 12v 20A) can replace the one I just fixed.

You just do not tie the output of all the supply together:
http://www.keysight.com/main/editori...0.00&id=520808
https://www.eeweb.com/electronics-fo...rallel-problem

Just do some research first!

[petehall347]

Re: Full wave rectifier vs bridge rectifier?

"i used to run everything from 12v for years" .....wah..........You live off grid, with Solar or RV mobile home?

mobile home ..converted bus to be exact . 1956 bedford . my inside lights are 12v . only have a small solar panel .

[capwizard]

Re: Full wave rectifier vs bridge rectifier?

Half Self-Sufficient Living is next project for me.........wifi.....an hour drive to Walmart and Home Depot is A must..................

Did you know… it is a lifestyle for many people today and... the way things are looking... it may become a norm of our future?

Self-Sufficient Living-15 Ideas to Improve The Quality Of Life
http://theselfsufficientliving.com/1...cient-in-life/

50 Resources To Help You Become More Self-Sufficient
http://www.naturallivingideas.com/50...lf-sufficient/

[capwizard]

Re: Full wave rectifier vs bridge rectifier?

Thank you again , It is not as easy as I thought! Using microcontroller ADC controls monitoring each power supply cc/cv then each AC Adapter needs have digital control CC/CV.

Because of Load balancing............. 2 low-value resistors (like 0,1 ohm) in series with each power supply and connect then after the resistors to balance the currents through the 2 PSUs…

Basically, if one of the power supplies will go into constant current mode [CC] then if you set it’s voltage slightly higher than the other one, the supply that is set to the lower voltage (say 12.0V) will regulate the voltage, and the other supply (set to, say 12.1V) will go into CC mode and simply supply the rest of the current required (because, it will supply it’s maximum current (or if it has a current adjust, then it will supply the current it is adjusted to)).................the diode idea might work

So we make isolate the two power supplies output using a high current schottky diode in following manner.

remote sense, CV or CC mode, even analog programming. Auto-tracking allows multiple supplies to track the master, the slaves can have the same output characteristics or can be configured to be proportional to the master.

[zx8401]

Re: Full wave rectifier vs bridge rectifier?

That output stage is a bit naughty, no seperate emitter resistor for each transistor, the transistor with the best gain will be working harder than the rest :-(

[petehall347]

Re: Full wave rectifier vs bridge rectifier?

That output stage is a bit naughty, no seperate emitter resistor for each transistor, the transistor with the best gain will be working harder than the rest :-(

is this a good time to mention a curve tracer ?

[larkesm]

Re: Full wave rectifier vs bridge rectifier?

This is the name of Graetz bridge construciton of placing the rectifier diodes in curicuit to have bridge diode and this is full wave. The rectifier theary goes here https://911electronic.com/rectifier-diode/