On Sat, 08 Apr 2006 08:08:33 -0000, Jasen Betts
wrote:

On 2006-04-07, Coyoteboy wrote:

Jasen Betts wrote:
possibly... could be neither.

What else could it be?

could be something like this +v
|
|
.--/\/\/\-----|--+--|-----------.
| | | |
| .---------+ `--|---/\/\/\--'
| | | ^
| | . . . .|. . . . |
| | . VCC(8) . |
| | . . |
| `---RES(4) OUT(3)------+----- out
| . 555 .
+-------TH(6) DIS(7)--
| . .
+-------TR(2) CV(5)--
| . .
===== . GND(1) .
| . . . .|. . . .
| |
`-------------+
|
gnd

---
That's not neither, it's using a variable resistance to control the
output, which is one of the options the OP suggested.

--
John Fields
Professional Circuit Designer