Amp Camp Amp - ACA

[Zen Mod]

well, proof is in da Pudding

if someone sez that soldering is awful, it isn't determining Solderer as person

wanna see my awful work as Brain Surgeon?

 

[PMA]

wanna see my awful work as Brain Surgeon?

Would you do such a job without studying and practicing first?
Is it wrong to ask for it?

 

[Stanislav]

Frankly, I do not have an archive of soldering jobs, so I can only dig in my stock and make a photo of some old prototype

My advice was quite sincere - without reliable assembly and soldering you may expect any kind of “unexplainable” failures. I am saying that as someone who spent 40+ years in electrical engineering and electronic design and who has assembled, soldered and tested about 4000 PCB boards. Just an advice.

And what does this prove?
That you are better than Joe Blow?
Who cares?
This is DIY as far as I know.
You better start a new thread offering professional advice how to best solder DIY kits, don't pollute the conversation here.

 

[Stanislav]

well, proof is in da Pudding

if someone sez that soldering is awful, it isn't determining Solderer as person

wanna see my awful work as Brain Surgeon?

No, cause I don't think you are a good brain surgeon, or a comedian for that matter.

 

[Zen Mod]

is it just my ZMEngrish?

anyway, I don't care

when I see awful soldering job, I don't have a problem to say so, and I'm not expecting Solderer getting that as personal characterization and insult

if contrary, well, not my problem

whenever I was prompted by someone to do better work, it just did benefit

 

[sgerin]

ZM is an EXCELLENT comedian!

 

[chermann]

in post 11916 i implement the ACA amp boards in a Apple G3.
here:

now the empty ACA housing (very small- just 60mm high) has to be a linear power supply with the given Trafo 160VA 18VAC one Winding with 8,88A.
CRC and caps what i got and have.

trafo- rectifier - CRC (on board, changeable) - output
CRC 2x12mF / 3x0,22R / 2x33mF
2x 22k Bleeder resistor and a green led

no load 24,61Volts
under load with 5 amps --> 20,80Volt

holly *%§"§ it is very small and compact..never did this before


chris

 

[chermann]

so was the planning....

 

[jlindqv]

Hi, I'm looking for advice on a replacement switch for this kit. I understand that the original switch is rated: 6A @ 125 VAC, 3A @ 250 VAC. How important is it to keep to those values? Would a rated 3A @ 250 VAC/5A @ 125VAC work fine too? Sorry if this is a stupid question.

 

[myleftear]

Totally ok!

 

[ChuckORWC]

The micro switch I'm using for my latest ACA build is rated for 6A @ 125VAC, 5A @ 250VAC, but only 0.1A @ 24VDC. A toggle switch or rocker switch will be more robust than a micro switch, but you might want to check your switch's DCV rating.

 

[tjw59]

When mine stopped working I did this. I use a power strip with a switch.

 

[myleftear]

rated for 6A @ 125VAC, 5A @ 250VAC, but only 0.1A @ 24VDC

How can this be? I mean, is there an electrical explantation for a switch being rated like many Watts (Volt times Ampere) in AC, but very lowly in DC?

 

[ChuckORWC]

Upon closer inspection it looks like 5/5/.1 . It does seem strange, but there it is. My only guess is that the switch relies on relatively light spring tension to make and break contact, and there is a greater propensity to arc/fuse with DC current than with AC. But a factor of 50 does seem extreme. Even with the 5A rating, I wouldn't be comfortable using this switch for mains voltage. I'm using ut to activate a 24V relay.

 

[ItsAllInMyHead]

How can this be? I mean, is there an electrical explantation for a switch being rated like many Watts (Volt times Ampere) in AC, but very lowly in DC?

https://www.mouser.com/blog/which-switch-who-cares-if-its-ac-or-dc

 

[myleftear]

In the future, the next time you wonder whether the difference between the AC and DC rating on a switch really matters, you can positively say yes and you’ll know why!

Thanks to you…

 

[motosapien]

So how is the Diy Store doing getting the ACA kits shipped? Any supply chain issues cropping up? Ordered one recently and have not heard from them.

 

[motosapien]

Oh me of little faith, my ACA arrived today nicely packaged. I ordered a Weller digital soldering station and some proper .8mm solder. This is going to be fun!

 

[motosapien]

I would start on it today but I'm waiting on

some eutectic solder. That is my new Emotiva BasxPT2 waiting for the ACA to join it. Currently streaming a 1974 Dead show from Winterland. Pardon the Norwegian toes.

 

[wcwc]

So I haven't used my ACA 1.1 Monos since the 19V PS went bad, but I was thinking of getting the ACA mini with the completion kit. The completion kit comes with a 24V 48W PS. Would that be enough to power one of the ACA 1.1 monos?