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Fortran:
Put one of those electric locks on his door.
If you slip with the probe he can't get out, giving you a few minutes to escape.  ^-^
BravoV:

--- Quote from: Fortran on November 06, 2016, 07:42:45 pm ---BravoV: Be prepared for a hefty price-tag. :)
The aluminium ones are crazy expensive, and the outlets for them isn't all too cheap either.
I think my setup landed on near 500€ total.

--- End quote ---

Damn, how much that aluminium bar alone ? I really love the design that it has two separated rails, one for the DIN stuffs, and the one at the bottom for the cables.  :-+

I guess I will have to improvise using plain multiboard wood planks + DIN rail and elbow grease eh ?
Fortran:

--- Quote from: BravoV on November 08, 2016, 01:40:19 am ---Damn, how much that aluminium bar alone ?

--- End quote ---
The single rail ones are about 100€ per 2.5m lengths.
Dual rails are about 150-180€.
You can probably find cheaper ones, but I'm guessing you'd need to cough up at least 100.
lmester:

I got some used transformers for free and decided to make a dual adjustable PSU. It started with a pair of the cheap PS kit boards available online. Quite a lot of mods were needed to make them work properly. Several components that came with the board were under rated.  rectifier diodes, pass transistor and shunt were overloaded. Op amps above rated voltage.

 I don't like noisy fans. I added a PIC based temperature controller for the fan.  Also, the transformers have multiple primary taps. I switch them to a higher voltage primary tap when low PS output voltage is selected. This drops the secondary voltage. In commercial PSU's this is done on the secondary side. Cuts power dissipation and keeps the fan off as much as possible.
 
 This is made mostly from parts that I had on hand. It still cost me about $50. Most of that for the panel meters, 10 turn pots and some nice knobs.
 
 Unless you have the expensive parts on hand, it's going to be cheaper just to buy one. Transformers alone will probably get you close to the price of a chinese power supply.
 
Vgkid:
Nice job on the power supply. Is that a HP5335 besides it.
What is the large black box?
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