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# tcmtech is cleaning out the shop!

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#### tcmtech

##### Banned
Since summer is almost here its time to do some sorting and organizing around here.

I Have at least 15 assorted trace, Heart Freedom and other inverter units I have collected over the years and I am getting rid of them and some other stuff too! They range from 500 to 2500 watts. Some are 'just quit and dont know why' and others are 'in pieces'.
They still have good transformers and cases so they are great cores for building a big DIY home made inverter unit.
All of them listed are not working and have had circuit board failures that took them down.

I will also have a few other goodies too. Two dead L-tec plasma cutters. They have bad control boards but good power supply's.
I also have a set of 40 amp hypertherm plasma cutters too. They are the old transformer style ones. One works well but the other is the spare parts machine for it, and is missing a few minor pieces but could easily be rebuilt on the cheap.
There is a pile of assorted plasma cutter torches and cords too. Some work some dont. A few workable units could be put together from the pieces.

I will post a list later today of what I have and what I want for it. Most is going on eBay 'as is not working'.

I am going to be doing some out of state work and am leaving around the 20th and need some quick cash for spending while I am gone!

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#### tcmtech

##### Banned
Here is the list.

Inverters
Trace RV2512. 12 volt 2500 VA X4 $100 each Trace DR2412. 12 volt 2400 VA$100
Trace DR2424. 24 volt 2400 VA $100 Trace DR1524. 24 volt 1500 VA$80

Heart Freedom 25. 24 volt 2500 VA 230 volt out x2 $100 each Heart Freedom 25. 24 volt 2500 VA 120 volt out$100
Heart Freedom 20. 24 volt 2000 VA 230 volt out x2 $100 each Heart Freedom 20D. 12 volt 2000 VA 120 volt out$100
Heart Freedom 7. 12 volt 750 VA 120 volt out $60 Heart Freedom. Combi$40

Plasma cutters.
L-Tec PCM 1000i. Bad control board and no torch. $250 L-Tec PCM 750i. Bad control board and no torch.$200
Hypertherm HT40C Good condition and works well. $350 Hypertherm Max 40. parts unit only, Missing a few components but is repairable.$150
Thermal Dynamics Econopack 50. parts machine. $100 Thermal dynamics Pack Master 100xl. parts machine$125

Miller S-60 Four roller comercial wire feeder. Works good $600 Exide 3CA-9 6 volt 200 amp hour comercial deep cycel batteries. Fair conditon and still holding charge, 8 good 2 have cracked cells.$25 each.

2 G.E. Constant Voltge Transformers. 208/240/277/480 input 120/240 output. 5 KVA $750, 7.5KVA$1000

#### tcmtech

##### Banned
I do welder and plasma cutter repair as part of my business. I also worked as the service tech for a welding supply company until corporate shut down the service department thinking it would drive up sales of new machines if the customer couldn't get the old one fixed. (genius move there.) When the department was shut down I bought up every parts machine I had there.
I also go around to auctions and what not and buy up dead machines and fix and sell them later. Its not uncommon for me to buy and sell 10 -15 machines in a year.

A dead commercial plasma cutter can go for under $50 at an auction and cost as little as$25 to fix. Then sell for $1000 -$3000 fixed!

#### HiTech

##### Well-Known Member
You have to remember that incorporated in that over-complex design is a 3-stage charger and automatic switchover, hence more circuitry. MSW inverters aren't all that bad. You only need pure sine units for sensitive equipment such as certain medical/life support or digital stuff that doesn't do well on MSW inverters.

#### tcmtech

##### Banned
True. but we have guys here that are masters of the multistage charger IC's and I know there are dedicated power monitor IC's as well. That still only adds a few more dollars worth of control components.
And realistically the micro controller guys we have here could knock out a full sine wave output with multistage charge control and power transfer all on a \$20 micro controller and 3 inch square circuit board.
I am not arguing against trace be rather the unreasonable amount of wasted time and cost that was required to build these the way they did.

#### OutToLunch

##### New Member
I can't say that I am familiar with the inverters that are being discussed here, but in commercial (and even industrial) targeted products there are a lot of design elements that are added to a product that may seem somewhat overdone but are likely there to obtain regulatory compliance or meet certain safety standards that are required to obtain the UL and/or CE mark. There may also be added complexity for other purposes such as high temperature / high humidity operation or other such aspects that, if not designed in, would certainly make the product much less complex.

#### HiTech

##### Well-Known Member
^^^^ What he said .... heck just take a look at a SONY "BR" television schematic. You don't even want to read one of their professional video recorder schematics!

#### nike6

##### Banned
not overdone in case of a lightening.

it can induve 4 kV into power grid (4,000 volts).

you do not want computer PSU to explode with a 120 dB bang.

#### heatherbowers

##### New Member
Do You Still Have the Trace DR1524?

#### shokjok

##### Member
Any problems exporting these items to Canada? I could drive down from Saskatchewan.

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