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Help with a PS2 amplifier

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Sinni

New Member
I am trying to build a voltage amplifier fot boost the PS2 voltage of 5v to 12 volts. I want to put neon in me keyboard but don't want a seperate wire for the power supply. Can anyone help?

Sinni
 

Chippie

Member
how much current do you need for the neon?

an invertor can be as simple as a 555 feeding a voltage multiplier or as complex as a boost regulator based on say a 78S40......... 8)
 

Sinni

New Member
Well i'm trying to connect StreetGlow's Hotwires **broken link removed**. After looking through their FAQ the 20" accent tube is about 1/2 amp. So guessing from that i would have to say the amperage should be pretty low.

Sinni
 

Chippie

Member
So you need a switcher that will provide 12vdc at around 500mA.......from a 5vdc source........Take a look at National Semiconductors web site for applications for the LM2577 switcher.......that should do the job with a low component count


post up if you need any more help
 

Gene

New Member
That should look prety cool when you finish. The stores here are selling lots of low voltage neon and LED components for the inside of computers and the auto stores are selling neon like the add you posted. I never heard of adding to the keyboard though. If you do it without adding any wires will be a real trick. Hope you will post a picture.
 

Sebi

Active Member
Don't forget to check PS2 5V output current capability.If You need 500mA on 12V boost reg.out, it sucks about 1,2A from 5V.
Maybe the circuit must be screened to avoid interference with data and clk signals.
As Chippie wrote, LM2577 the best choice, i also recommend it.
 

bogdanfirst

New Member
maybe i am wrong but isnt the current available on the PS/2 port limited to 500mA? so if you want 500mA for 12V you need .5 x 12/5=1.2A
how are you gonna get that from a PS/ 2 port?
 
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