Power supply advice needed

On Sat, 30 Sep 2006 10:48:50 GMT, snipped-for-privacy@puntnl.niks (Nico Coesel) Gave us:

Already integrated into well made units.

Looks like you do not know how to pick the right connector. Also, already integrated into a good quality selection.

ALL supplies, to get UL and CE conformity has to handle short circuit conditions on their output pins.

Overkill in your circuit designs can cause serious doubts about your electronic IQ as well.

On Sat, 30 Sep 2006 23:27:16 -0400, legg Gave us:

Any good director of engineering knows how to get any bad "bean counter" ousted for stupidity in any such cases as well.

One in the electronics industry should never compromise the integrity of one's products by cutting corners on the device that powers it just to trim a few bucks off the COM.

Yes, but the circuit to be fed may cause too much radiation on the power lines as well. So the filtering requirement stands.

This works until the customer decides he/she wants to use a different PSU. If the connector you choose is too exotic, the end customer may choose to open the box and fit something else...

You never know what customers do with your devices. Back when I designed telco equipment I had a bridge rectifier or series diode on the power supply inputs so no matter how they powered the devices, the device itself would survive at least.

As long as companies like Sony screw-up big time with something simple like laptop batteries, nothing ceases to amaze me.

Sony screws up more than batteries. They made decent electronics at one time, but they no longer care what they ship, as long as its cheap enough to sell at retail.

On Sun, 01 Oct 2006 19:39:37 GMT, snipped-for-privacy@puntnl.niks (Nico Coesel) Gave us:

A practice I follow in my DC fed PS designs. I make modules, however, with bare mil style pins for hooking up source supplies to. A product in a cabinet, being fed by a Dongle style supply shouldn't need it. A warranty could easily be voided since a service would require seeing the original dongle with the device. Anything else is a void. The use of a supply other than that which was provided with the device would void all warranties, and could easily be traced.

Folks shouldn't screw with products no matter how smart they think they are. Doesn't matter if they are smart enough.

What we really need is better consumer information services to guide folks into knowing what quality is. A lot of what is out there is no better than the cheap chinese knock off of a pair of pliers that one would see at the flea market. Bogus is bogus, and consumers buy a lot of bogus crap these days.

Well designed gear gets it's safeties placed when and where needed.

Crap doesn't Crap is crap, and that will never change. It's like buying a "digital" multimeter that has only 1.5 digits and a ten percent basic accuracy. It just doesn't work out right.

On Sun, 01 Oct 2006 19:44:37 GMT, snipped-for-privacy@puntnl.niks (Nico Coesel) Gave us:

Battery manufacture is more of a chemical industry than an electrical on the manufacturing side. On the consumer side, we see it as merely an electrical product.

Power supplies are an order of magnitude easier to make well and make right and make cheaply than a battery of even the easiest to manufacture technology.

The one (primary/alkaline) battery plant I've been in really looked more like a packaging plant than any kind of manufacturing.

Best regards, Spehro Pefhany

Bean-counters show up everywhere. Even in the director's chair.

Providing there's a budget for an activity, it has a chance of getting done. Reselling off-shore designs has lower overhead than designing for off-shore mfring. One less director, anyways.

Surely you've noticed the trend?

RL