0G3: Difference between revisions

Revision as of 05:00, 17 September 2023

The 0G3 (European: 85A2) (P/N 154-0291-00) is an 85 V voltage reference tube with a miniature B7G 7-pin base. It is very similar to the 5651 but has a wider current range, specified as 1–10 mA, and tighter voltage rating, 85±2 V at the recommended 6 mA vs the 5651's 87±5 V. Socket pinout is identical.

Note: The designation is 0G3, the leading zero indicating a tube without a heater, although this is often mis-printed as OG3.

It is used in the 132, 547 and 506, among others.

Aged/Checked/Matched Pair Details
Used in	Tek Part#	S/N Range
Z	157-0064-00	All
661	157-0067-00	All

Reference:

Tube aging procedure / Selection and checking procedure

Links

Pictures

0G3 inside a 547

Used in

Some instruments using part 0G3

Instrument	Manufacturer	Class	Model	Description	Introduced
132	Tektronix	Power supply	132	Module power supply	1961
506	Tektronix	Oscilloscope	506	20 MHz scope	1964
547	Tektronix	Oscilloscope	547	50 MHz oscilloscope	1964
560	Tektronix	Oscilloscope	560	1 MHz scope	1961
561	Tektronix	Oscilloscope	561	10(4) MHz "General Purpose Scope"	1961
561A	Tektronix	Oscilloscope	561A	10(4) MHz "General Purpose Scope"	1962
564	Tektronix	Oscilloscope	564	Split-Screen Storage Scope	1962
565	Tektronix	Oscilloscope	565	10 MHz dual-beam scope	1962
567	Tektronix	Oscilloscope	567	Sampling scope	1962
661	Tektronix	Oscilloscope	661	Sampling scope	1961
Keithley 610	Keithley	Multimeter	610	Electrometer	1960
Keithley 660A	Keithley	Multimeter	660A	Differential voltmater	1968
TU-4	Tektronix	Plug-in	TU-4	560 Series test load plug-in	1961
Z	Tektronix	Plug-in	Type Z	Comparator preamp plug-in	1960

@@ Line 8: / Line 8: @@
 |Description=85 V voltage reference
 |an=an
-|Used_in=132;506;547;661;Z;
+|Used_in=132;506;547;661;TU-4;Z;
 }} with a {{B7G base}}.  It is very similar to the [[5651]] but has a wider current range, specified as 1–10 mA, and tighter voltage rating, 85±2 V at the recommended 6 mA vs the 5651's 87±5 V.  Socket pinout is identical.