Hi,
recently I removed a very beautiful transformer from a 70's HP counter. It is black and full encapsulated and japanese manufacturer with japanese printing.
There is 170V 64mA AC that was for the Nixie tubes IMHO.
Is it right for a tube I/V stage ?
Other voltages are 18V 1,2A 18V 1,44A 10V 0,24A 12 V 1,2A
+/- 18V --> +/- 15V
12V --> 5V
10V --> -5V
Which tube is best ? E88CC, E188CC, CCa ? The russian ?
In this unit was also an adjustable 10 MHz OCXO sine output "high stability oscillator"made by Motorola with another black encapsulated transformer & PSU pcb.
recently I removed a very beautiful transformer from a 70's HP counter. It is black and full encapsulated and japanese manufacturer with japanese printing.
There is 170V 64mA AC that was for the Nixie tubes IMHO.
Is it right for a tube I/V stage ?
Other voltages are 18V 1,2A 18V 1,44A 10V 0,24A 12 V 1,2A
+/- 18V --> +/- 15V
12V --> 5V
10V --> -5V
Which tube is best ? E88CC, E188CC, CCa ? The russian ?
In this unit was also an adjustable 10 MHz OCXO sine output "high stability oscillator"made by Motorola with another black encapsulated transformer & PSU pcb.
Hello
Don't forget the 6.3V (or 12.6V) for the heating.
170 V is RMS ?
You have to consider around 7-8 ma by triode.
If tou use the Thorsten's schematic (I/U converter with ecc88), there is two triodes (one tube) on each chanel, then 16 ma by chanel.
http://www.diyaudio.com/forums/showthread.php?postid=546960#post546960
170V if RMS, will give 170Vx1.414= 240V, you will lost around 40 V in filtering, then 200 V to feed the tubes, 36 ma for the two chanels, you can try it
Philippe
Don't forget the 6.3V (or 12.6V) for the heating.
170 V is RMS ?
You have to consider around 7-8 ma by triode.
If tou use the Thorsten's schematic (I/U converter with ecc88), there is two triodes (one tube) on each chanel, then 16 ma by chanel.
http://www.diyaudio.com/forums/showthread.php?postid=546960#post546960
170V if RMS, will give 170Vx1.414= 240V, you will lost around 40 V in filtering, then 200 V to feed the tubes, 36 ma for the two chanels, you can try it
Philippe
You need 300 ma for one Tube (two triodes) Ecc88.
As you need at least 2 tubes, you will need 600 ma. Your 10 V is only 0.24A.
Philippe
As you need at least 2 tubes, you will need 600 ma. Your 10 V is only 0.24A.
Philippe
thorsten is the same schematic of the walrus by Kuei Yang Wang?
Bernhard, what dac chip you use please.
Bernhard, what dac chip you use please.
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