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 K8LBH - My SUPER HP-23 Power supply! 
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transpixel HP-23S - S is for SUPER.  This HP-23 clone has double high voltage and extra metering installed to support my 222 amplifier project. transpixel
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transpixel I used the usual 11 pin octal connector so that I could move a wire or two and use this as a HP-23 if desired. The 11 pin connector is one of the more expensive parts! A kit to build the cable to connect to your HW / SB whatever will cost about $33 on eBay. Heath only used an 8 wire cable, so you could use a 8 pin connector on your home made power supply, since they are cheaper and easier to find. You would of course need the 11 pin connector on the radio end though and this would be a custom made cable! transpixel
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transpixel Looks like a lot of parts, but I have double capacitors because I am using two transformers in series to give me 1700 vdc rather than the HP-23 normal 850 volts. I also added some metering and relay control for my amplifier. transpixel
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HP-23S - S is for SUPER. This HP-23 clone has double high voltage and extra metering installed to support my 222 amplifier project. - Administrator (admin)
Viewed: 396 times.
I used the usual 11 pin octal connector so that I could move a wire or two and use this as a HP-23 if desired. The 11 pin connector is one of the more expensive parts! A kit to build the cable to connect to your HW / SB whatever will cost about $33 on eBay. Heath only used an 8 wire cable, so you could use a 8 pin connector on your home made power supply, since they are cheaper and easier to find. You would of course need the 11 pin connector on the radio end though and this would be a custom made cable! - Administrator (admin)
Viewed: 333 times.
Looks like a lot of parts, but I have double capacitors because I am using two transformers in series to give me 1700 vdc rather than the HP-23 normal 850 volts. I also added some metering and relay control for my amplifier. - Administrator (admin)
Viewed: 334 times.
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transpixel This would be the high voltage capacitor bank for a standard HP-23. Parts cost is less than $8.00! qty 4 150mfd 450v caps and qty 4 100K 2 watt resistors.

The capacitor diode bank is easily constructed using Manhattan style assembly. Capacitors are imports and much physically smaller than the original HP-23 parts. I bought them for less than $1.65 each shipped on eBay!
Copy and paste this address into your browser!
http://www.ebay.com/itm/10-Pieces-ELECTROLYTIC-CAPACITORS-150uf-450v-/231511446784?pt=LH_DefaultDomain_0&hash=item35e7285500

Cheap scrap PC board material. Foil side of board down. Strips fastened with super glue. Easy construction! transpixel
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transpixel Again, I have twice the capacitors and resistors needed for a real HP-23 with only 850 volts. Half of these capacitors and resistors would be gone on a true HP-23 clone.
100K resistors 2 watt qty 25 on ebay $5.25 shipped.

Copy this link into your browser!
http://www.ebay.com/itm/25pcs-100k-ohm-5-2W-metal-oxide-resistors-/251820214315?pt=LH_DefaultDomain_0&hash=item3aa1a7882b


Round pads were cut with a punch and super glued in place. I love building in this manner, it is so easy! You could cut small square pieces with tin snips and use them just as well. transpixel
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transpixel High voltage supply top, right side bias supply, across the bottom, the 250v/300v supply.

Diodes added, again twice as many for my high voltage version than a normal HP-23 would have. After I took this photo, I noticed a wiring error in the 250 vdc supply. It was easy to pop round shaped pieces loose and re-glue else where. Changes are quick, as fast as it takes for the glue to dry! transpixel
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This would be the high voltage capacitor bank for a standard HP-23. Parts cost is less than $8.00! qty 4 150mfd 450v caps and qty 4 100K 2 watt resistors.

The capacitor diode bank is easily constructed using Manhattan style assembly. Capacitors are imports and much physically smaller than the original HP-23 parts. I bought them for less than $1.65 each shipped on eBay!
Copy and paste this address into your browser!
http://www.ebay.com/itm/10-Pieces-ELECTROLYTIC-CAPACITORS-150uf-450v-/231511446784?pt=LH_DefaultDomain_0&hash=item35e7285500

Cheap scrap PC board material. Foil side of board down. Strips fastened with super glue. Easy construction! - Administrator (admin)
Viewed: 353 times.
Again, I have twice the capacitors and resistors needed for a real HP-23 with only 850 volts. Half of these capacitors and resistors would be gone on a true HP-23 clone.
100K resistors 2 watt qty 25 on ebay $5.25 shipped.

Copy this link into your browser!
http://www.ebay.com/itm/25pcs-100k-ohm-5-2W-metal-oxide-resistors-/251820214315?pt=LH_DefaultDomain_0&hash=item3aa1a7882b


Round pads were cut with a punch and super glued in place. I love building in this manner, it is so easy! You could cut small square pieces with tin snips and use them just as well. - Administrator (admin)
Viewed: 365 times.
High voltage supply top, right side bias supply, across the bottom, the 250v/300v supply.

Diodes added, again twice as many for my high voltage version than a normal HP-23 would have. After I took this photo, I noticed a wiring error in the 250 vdc supply. It was easy to pop round shaped pieces loose and re-glue else where. Changes are quick, as fast as it takes for the glue to dry! - Administrator (admin)
Viewed: 390 times.
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transpixel I used a 7 x 9 inch chassis to hold two transformers, originally from SB-400/401 line and about $40 each on eBay. transpixel
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transpixel Transformer holes were cut out with nibbling tool, but I have just used a hacksaw blade in the past. transpixel
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transpixel Why would anyone go to all this trouble?

200 watts on 222Mhz band! My AM-912A/TRC amplifier setup. 222 gear is so rare! transpixel
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I used a 7 x 9 inch chassis to hold two transformers, originally from SB-400/401 line and about $40 each on eBay. - Administrator (admin)
Viewed: 383 times.
Transformer holes were cut out with nibbling tool, but I have just used a hacksaw blade in the past. - Administrator (admin)
Viewed: 371 times.
Why would anyone go to all this trouble?

200 watts on 222Mhz band! My AM-912A/TRC amplifier setup. 222 gear is so rare! - Administrator (admin)
Viewed: 358 times.
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