uA726 replacement, (the comedy of errors)

[>>>marjan<<<]

> Lets try an inexpensive one like the LM3046 which is used in the
> Serge NTOs and documented AN-299. Ok we build that and listen
> to the oscillator. 

Probably only one here who doesn't know, but what is Serge NTO?
(I've seen an-299 but not this schematic)

> before you realize that because the AN-299 schematic didn't have
> pin numbers marked, and you just hooked up whatever, the heater
> and sense transistors are all the way across the chip from each
> other, producing a large time lag. Move the transistor connections.
> Now it works like the Serge. Doh!
> 

So what are right connections?


> The LM3046 design does
> work as evidenced in Micromoogs and Sources. But those oscillators
> are used over a limited range.
> 

I thought about using two tranny pairs from one 3046 and one tranny
for heater (like in Micromoog or Tomg's design) but not shure if
using substrate tranny (12,13,14) is good idea for heater?


marjan