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replacement diode for the 1n4001

GreenLaser

GreenLaser

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is there a diode i could replace for the 1n4001 for something like 1n4004? in the ddl driver
cheers
p.s can i replace the 100 ohm pot for a 200 ohm pot?
 
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hugo999999

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yes im fairly sure you can, i myself use 1n4004's, they're just a higher powered version
 
GreenLaser

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and also i could use that potentiometer? secondly i could use a 47uf 25v in stead of a 47uf 32v?
cheeers
 
hugo999999

hugo999999

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not sure what u mean by i could use that "potentiometer", im also not sure about the cap part but yes i actually use 25v 47uf caps
 
hugo999999

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maybe, because u would turn it the same distance but get twice the resistance, it would be harder to adjust but certainly doable.
 
lasersbee

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GreenLaser said:
i mean can i use a 200ohm pot instead of 100 ohm
cheers
Click to expand...

No.... you should not...
At 200 Ohms per total movement of the pot you will find it
2 times harder to adjust the current than with a 100 Ohm
pot... The 200 Ohm pot sensitivity will be 2 times worse.

Any 1N400[X] ( change X for any number from 1 to 7) Rectifier
Diode can be used. The X is the Voltage rating... not the power
rating.

And any 10uf to 47uF capacitor with at least a 12 volt rating
will work on a linear driver.


Jerry
 
GreenLaser

GreenLaser

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so 1n4004 diodes can also be used in a test load? im so sad now you tell me that i shouldnt have goten a 200ohm because i couldnt because the shop doesnt sell them :( when they arrive i will ask you guys for help in using the 200ohm pot.
cheers
 
hugo999999

hugo999999

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yes u can use the in4001's in a test load. for the 200ohm pot, with a little patience u can set it correctly i know a few people that have used 200ohm pots
 
GreenLaser

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awesome thaank you.
can someone send me a link to a post about making test loads and how to use them i cant find any?
cheers
 
Benm

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Search the forums for that one.

I'd recommend getting 1n4007's if you are buying, they can work with mains voltage if required and perform just as well in these applications, very universal.

As for the pot: you can probably work with the 100 ohms and a series and/or paralel resistor, depending on what current range you require.
 
GreenLaser

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i did try searching "test load" "how to make a test load" still nothing ?
cheers
 
Flaminpyro

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Keep looking for that schmatic it's there, use "dummy load" not test load. now if you want to make the best test load go here and have a look at mine it's very easy to use and no soldering to change "diode load" you move a shorting jumper to selsct "RED" or "BLU" and there are gold plated pins to connect your VOM to for the reading ;)
http://laserpointerforums.com/f64/fs-laser-tools-44115.html
 
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GreenLaser

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kool thanks. please tell me the colour code of the 4 ohm resistor and replacements for it
 
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