Conn tuner
On 20/05/2019 13:23, Scott Dorsey wrote:
geoff wrote:
Anybody know the power/current consumption of an ST-11. I have a USA
version coming and will need to build or source a 110v 60Hz
inverter/whatever supply to run it from 230v 50Hz.
Doesn't mention the power spec in the manual, though it does have
schematic and component list !
I don't know but... I think the only difference between the 50 and 60 Hz
versions was the strobe disc, and you might be able to order a 50 Hz strobe
disc.
If you run it on inverter, that inverter needs to be VERY precisely on
frequency. Crystal control, no free-running oscillator.
For that really authentic feel, use a 60Hz inverter controlled using a
phase locked loop locked to the local mains frequency. That will give
the genuine variation in tuning over time as the mains frequency drifts
a bit. ;-)
--
Tciao for Now!
John.
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