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In Reply to: RE: Bas are you using your B7 yet? posted by Dyna Saur on March 05, 2008 at 08:15:38
1J17B (or better, 1Z17B) Operating Characteristics:(These translations may not be perfect, it's off the top of my head)
Pin connections of Tube 1Z17B:
a: package outline
b: pinout of the tube's base
c: schematic diagram of the tube1: Cathode / filament
2: Cathode / filament
3: internal shield
4: third grid (suppressor grid)
5: second grid (screen grid)
6: first grid (input grid)
A: Anode - (plate pin on top of tube)Bulb length 40 mm (1 5/8 inch)
Lead lengths at least 40 mm (1 5/8 inch)
Lead diameter 0.4 mm (1/64 inch)
Anode lead length 25 mm (1 inch)Input capacitances:
Input 3.7 +/- .7 pF
Output 2.7 +/- .4 pF
Transfer no greater than 0.05 pF
Anode - Cathode: no greater than 0.15 pFFilament Voltage 1.2V
Filament Current 60 +/- 6 mA
Plate voltage 60V
Screen Grid voltage 40V
First Grid voltage 0V
Plate current 2 mA +/- 0.5 mA
2nd grid current no greater than 0.25 mA
Transconductance no less than 1000 uMHOs (1.0 mA/V
Transconductance with 0.95V filament voltage no less than 850 umhos (0.85 mA/V)
Grid circuit resistance 60K ohmsInverse grid current no greater than 0.5 uA
Maximum operating conditions
Maximum filament voltage 1.4V
Minimum filament voltage 0.95V
Maximum plate voltage 90V
Maximum second grid voltage 60V
Maximum plate dissipation 0.5 Watt
Maximum second grid dissipation 0.18 WattMaximum cathod current 5 mA
/ed B in NH (with nothing better to do during lunch hour) ;-)
real radios glow in the dark
Edits: 03/05/08 03/05/08 03/05/08Follow Ups:
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