[Amps] Turret terminal construction

[Will Matney]

Bill,

I've not seen them either. I do know they make a spotfacing tool for use with a single or double sided PC board. It has a small arbor in its center which goes in the drilled hole. A few cranks and it takes the copper off in a round spot so you can insulate the terminal from the board. This is good for using the copper as a ground plane for all the devices. With a double board, you can make one side hot and the other ground like a big capacitor. then you remove foil from one side or another to make a terminal ground or hot.

Back when I was a kid, the TV cable owner was a friend of my dads. The old Blonder Tounge amps, etc. had this type of circuitry using turret terminal boards. I got hooked then because he gave me all that when they converted to solid state. I had an old junked military receiver, forget the model, which used them. One thing they did was either dunk or spray the whole chassis in varnish for moisture protection, less the tube sockets and the variable caps. Those wiring harnesses were a bitch to get apart after that though if need be. To save the boards and other components, I used a spray on paint/varnish remover and washed um off with a water hose. The caps were left that way and just cut out and saved.

 To me, any more, they dont make stuff as heavy duty as they used to. Using those turret terminals was a good method and still is.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 4/20/05 at 11:12 AM Bill Fuqua wrote:

>They also come in plastic or Teflon insulated mounts that can be put 
>directly on chassis.  Don't seem them much anymore except sometimes see a 
>Teflon one where high resistance path to ground is required.
>
>73
>Bill wa4lav
>
>
>At 10:52 AM 4/20/2005 -0400, you wrote:
>>Does anyone on here still use turret terminal construction any? Most will 
>>buy tie strips because of cost, this I know, but turret terminal 
>>construction is about the neatest type I know. If so, I was thinking
>about 
>>stocking the supplies to do this with if any would be interested. They 
>>make two different types of affordable punch/die assemblies. One just
>uses 
>>a hand punch and a small anvil. The other sets up in a drill press where 
>>you use the presses quill as a punch, and the anvil goes on the table. I 
>>have the one that is used by hand and it's easy to use. I have built 
>>several projects this way and it is the neatest wiring I've done. Gonset 
>>used to do this in their amps, and a few others.
>>
>>For those not familiar with them, a turret terminal looks like a small 
>>turret made of brass and plated. They're about 3/16" in diameter with a 
>>head similar to a nail and a ring below that. Some are hollow all the way 
>>through. The bottom, which fits through a hole in a piece of insulation 
>>board, is countersinked. You place the terminal in the hole, turn it 
>>upside down, place the terminal on the anvil, then use the punch to
>spread 
>>the bottom of the terminal out holding it in place. They make pre-made 
>>boards this way also, but are higher than terminal strips.
>>
>>If any might be interested in these, let me know.
>>
>>Best,
>>
>>Will
>>
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