DC vs USB power

[goonie]

Sorry for the newb question

So I tried using the search and sifting through posts - I'm still fuzzy.

I just ordered a USB port that plugs directly into the wall. I'm assuming that I'll get 5v from the wall using my standard 510 passthrough. Am I wrong? Do I need to cut out the battery box to achieve 5v?

Thanks

 

[Scottbee]

Yes, the in-line battery will need to go. By-design it will limit you to 3.7-4.2 volts or so....

 

[goonie]

So even though I'm plugging into the wall, and with the battery box removed, I still won't get 5v?

 

[nick76]

So even though I'm plugging into the wall, and with the battery box removed, I still won't get 5v?

The switch- circuit board in that standard 510 PT can not handle 5V, it's not gonna work! I tried that with my 510 PT before ended up making my own PT by using RCA, tactile switch and USB cable.

Nick

 

[caesar]

I just ordered a USB port that plugs directly into the wall.

Unless that wall adapter is rated at more then 2Amps you are far better off and safer using the PT battery as standard inline.
Usually those wall adapters are rated at 500mA, but mostly a 400mA current draw will burn them. Attys tend to draw in excess of 1500mA at 5V so chances are very slim that it will work.

 

[WillyB]

The switch- circuit board in that standard 510 PT can not handle 5V, it's not gonna work! I tried that with my 510 PT before ended up making my own PT by using RCA, tactile switch and USB cable.

Nick

You have a tactile switch that can handle the 1.5A+ load?

 

[Kewtsquirrel]

Tact switches will handle it for a month or two before performance gets spotty. Most of those wallwarts for the USB hubs are rated at around 2A as well, as it's a 4port hub that outputs 500mA per port. If theres internal circuitry trying to limit the output per port to 500mA, it would be very easy to just wire a USB female plug directly into a 2A wallwart and plug your passthrough into there.

If you want a mod to keep working indefinitely, either 3.7v or 5v or 7v, the /only/ way to keep a tact switch working is to route the current away from the switch and use the switch to activate a relay. I use mosfets, but other relays would work.