# Homework Help: 15 Kv linear power supply Help?

1. Jul 24, 2007

### !DSeva

1. The problem statement, all variables and given/known data

Hi friends,

We are working on a project for devloping a HIGH VOLTAGE POWER SUPPLY
Around 15 Kv for co2 Laser.

Atpresent we have the power supply using 1N4007 that have a Vrrm (Peak
inverse voltage of 1000 V).We have uses 80 Diode in series as a diode bank.
To get an output of 15Kv.

http://img462.imageshack.us/img462/9214/untitledca4.png [Broken]

Now wants to use diode of Piv or Vrrm= 15Kv (Diode no. HV05-15).

So please tell me what are the values of Ceramic capacitors and Resistances.

Also tell us the formulas for these calculations.

DATASHEET OF DIODE:

Part name= HV05-15

Vrrm or PIV 15 kv

Vrms 10.5 Kv

Vdc 15 Kv

If(av) 550 mA

Repetitive Peak Reverse Surge Current...IRSM 100 mA

Non-Repetitive Peak Forward Surge Current...IFSM 200 A

2. Relevant equations

3. The attempt at a solution

<< Note: character formatting removed by berkeman for readability >>

Last edited by a moderator: May 3, 2017
2. Jul 24, 2007

### Staff: Mentor

Welcome to the PF, !DSeva. I edited your post above to remove the large fonts and red characters. We strive to keep posts as readable as possible here, so please do not add wild formatting to your posts.

Now, on your question, have you considered just using a 15kV television flyback converter circuit instead? You could use one out of a small black & white TV set, or look up the parts list and build one from scratch. That would seem to be a more efficient way to make your 15kV laser power supply.

Oh, and you have an advisor helping you on this, right? Especially concerning the safety aspects of working with high voltages? These voltages are definitely lethal, if you don't know what you're doing. Please be careful.

Last edited: Jul 24, 2007
3. Jul 25, 2007

### !DSeva

But Sir i have to modify the existing linear power supply

By using 5 Nos 15 Kv Vrrm Diodes instead of using existing 80 nos 1Kv diodes