It's a easy as eating pancakes!
I'd suggest a T-1 LED. they're the smaller of the normal T 1 3/4.
Like a diode, an LED is polarity sensitive, it will only light when connected
correctly.
decide where on the front panel you want the led to go, the smaller T-1 I think
would look the best.
using a scrap piece of pcb material, metal, or whatever you have, and use that
as a practice piece. You want a hole that the led will JUST barely push into to.
when you have the right size, mask off the front of the 320, mark the spot with
a marker and then gently tap in a punch tip to make a small dimple, keeps the
drill from walking.
when the hole is in, get a black magic marker and mark the inside of the hole
and the edges, then push the led into the hole
place the led into the hole so the leads are side by side and not up and down.
as small, and I mean small, drop of super glue will hold the led in place
you'll notice that the led has one lead longer than the other. that longer lead
is the POSITIVE side the led.
Now, you need a 1K resistor. clip the both leads back on the resistor to about
3/8 of an inch. Pretin both resistors leads and the longer lead of the LED.
Using a just a small amount of solder, solder one end of the resistor to the
long lead of the LED.
Now, with some small gauge wire, say 24 or 26 solder a wire from the short lead
to the nearest ground connection.
slip a piece of heat shrink tubing or insulating tubing (tape will work, too)
around the resistor and the connections to the led. You don't want either lead
to touch.
(If I were doing this, I'd cut both resistors leads to about 1/4 inch, and then
solder the wires. But if you've never worked with one before, then leave the
leads long.)
solder a wire from the free end of the resistor to the power switch.
Choose the lug on the power switch that has a wire going to the pcb. Solder the
wire from the resistor to that lug.
apply power and flip the switch.
Enjoy your power LED
Mike, wb8vge
Ohhh, if you don't have a few red led T-1 in hand, let me know and I'll send
you some----free!
On Sep 29, 2012, at 4:23 AM, Richards wrote:
> Greetings TenTec Mavens -
>
> I would like to add a pilot light to the front panel of my TenTec RX-320D.
> I have SOME home brewing skills... having built several kits, including a few
> TT receiver kits, and having designed some small project circuits on my own.
> My experience suggests doing this is not as easy as merely soldering a LED
> into the circuit, and sticking it through a hole in the front panel.
>
> But how hard IS it? I cannot find any articles where this modification is
> described. Any clues where I should start? Any tips?
>
> ---------------- K8JHR ---------------------------
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|