Universal HighVoltage Power Supply PCB

Description

Universal H.V. power supply
VOLTAGE DOUBLER or BRIDGE RECTIFIER CIRCUIT
WARNING THIS POWER SUPPLY USES LETHAL VOLTAGES!
THIS IS NOT A BEGINNERS PROJECT!
IF YOU HAVE NEVER WORKED WITH HIGH VOLTAGE BEFORE, SEEK THE ADVICE OF SOMEONE WHO HAS!
IT MAY SAVE YOUR LIFE!
INTRODUCTION
The Tactical Radio Gear, Universal H.V. power supply PCB is intended for amateur/commercial radio amplifiers, requiring up-to 4.5KV plate supply. The design is conservatively rated for 4500 VDC @ 2A ICS; and contains most everything needed on the PC board.
The Universal H.V. power supply is unique, in that either a Bridge or voltage-doubler configuration can be selected. Every feasible protection & safety possibility has been included in the design.
BUILDERS
Available as a completely assembled, and tested High Voltage DC Power assembly; as a complete Kit; or as a bare PCB.
BARE BOARD
Dimensions of the board: 6.9? x 7.97? inches. The height above the PCB is determined by the capacitor used, (1.97? inches nominal for the 50mm caps).
For those planning to build their own, the voltage rating of the filter capacitor chosen, will determine the power supplies maximum working voltage. The PCB layout uses the popular snap-in 50mm electrolytic capacitors:
The Universal H.V. power supply will accept the common 30mm, (1.18?), or 35mm, (1.39?) diameter snap-in capacitors. (1.97? inches nominal for the 50mm caps). Ten capacitors are required, each one has provision for its own equalizing resistor.
FEATURES
Assembled Unit Components
The assembled Universal H.V. power supply, uses: 10 x 35mm×50mm, capacitors: 680uF @ 450vdc. Tolerance: +/-20% Temperature rating 105?C
20 x 1KV @ 10amp diodes, with 600A peak surge (10A10) 5 x per leg
1/4? terminals or solder the wires to the board
5 insulated stand-offs?
PCB MECHANICAL DETAILS
The PCB is a Heavy-Duty 2mm thick board, with 2 ounce copper.
¼? - Spade lugs provide convenient connections, to make installation & removal of the module fast & easy.
(5) X 8-32 mounting holes are provided, for the insulated 2? stand-offs, to mount the PCB.
A .01uF @ 1KV disc, capacitor is provided for each  H.V. diode. These caps suppress the commutation spikes that are generated, when the diodes turn on to charge the reservoir capacitor near the peak of the input sine wave.
These suppression capacitors are especially essential for sensitive equipment, like high-performance transceivers? where commutation spikes can infiltrate the whole system?
Each diode has a 160K/3W equalizing resistor, for additional spike/surge and glitch protection; common with some types of tubes; and AC Line service(s).  They also provide a bleed-down path.
Provisions for meter multiplier resistors, are located at both the B- & B+ ends of the power supply. Multiple accessory (3W) resistor pasterns, are provided on each buss, to allow the user to design their own IP monitoring arrangement & glitch resistor, if mounted on the PCB.
The builder can determine what value(s) of equalizing resistors are best for their particular circuit arrangement.
USE CAUTION!!
This supply has two bleed-down paths for safety: (1) The multiplier resistor string and; (2) the equalizing resistor string.
NEVER ASSUME THEY ARE WORKING!!
ALWAYS FOLLOW THE SAFETY PROCEDURES ABOVE
AND STAY ALIVE!!!