Heating a component in the interests of thermal stability.

[Thedarkb123]

Most analogue synthesizers use control voltages that increase linearly with pitch, but humans perceive pitch logarithmically, this necessitates exponential converters, the biggest source of thermal instability in synthesizers. Has nobody thought to actually heat the exponential converter to, let's say 30º with a Peltier tile and keep it there. What would be the disadvantages to this on a mains powered synth over mounting the transistors of the converter on the same heat sink.

 

[davenn]

The reference crystal oscillator is often heated so as to produce thermal stability

 

[Harald Kapp]

What would be the disadvantages to this on a mains powered synth over mounting the transistors of the converter on the same heat sink.

How would you control the temperature when the thermal energy comes from the power transistors which cannot be regulated without influencing the power supply of the synth?
A separate heater (not necessarily peltier, as cooling is probably not required) can be controlled independently from the power supply.

 

[(*steve*)]

Google "crystal oven" for information on how it has been done before...

 

[davenn]

Google "crystal oven" for information on how it has been done before...

yes, which is what I was hinting at

 

[shrtrnd]

I would guess the reason to not add components to any mass-production type equipment would be cost savings if the temperature range conditions were acceptable with a common heat sink.
High-end test and measurement equipment often have temperature controlled 'ovens' within them to maintain output signal integrity.
You get what you pay for and I think manufacturers will try to keep their costs down wherever possible to make their gear competitive price-wise with the competition.