Datasheet and basic application circuit included at the end of this document ( 02.06. 2002 )

EM 800 is our specially featured item for clocks, equalisers and a whole lot of fun projects.
This tube is offering you a perfect amusement park for your fantasy and creativity.

EM 800, die besondere Anzeigeröhre für Uhren, Equaliser und eine Menge anderer toller
Projekte- Ihrer Fantasie sind keine Grenzen gesetzt.
 

EM 800				price without tax	price incl. tax
1 pc / Stck.	EM 800	T	no	4,00	4,64
6 pcs / Stck.	EM 800	T	no	20,00	23,20
12 pcs / Stck.	EM 800	T	no	38,00	44,08

 

	Fassungen für die EM 800	sockets for the EM 800
	Noval	9 pin miniature		Euro netto	Euro brutto
FAS012	Fassung Chassis Noval Keramik vers. Kontakte mit optional montierbarem Abschirmbecher	9 pin miniature silver plated contacts with optional shielding.		2,60	3,02
FAS020	Fassung Platine Noval Keramik versilberte Kontakte	9 pin miniature PCB mount ceramic		2,60	3,02
FAS021	Fassung Platine Noval Kunststoff / Keramik Platinenmontage Ausbau	9 pin miniaturePCB used, cleaned		1,10	1,28

 
 

EM 800 with zero input

 

EM 800 with approx -4 V input

 

EM 800 with approx -8.5 V input, full scale

 
 
 

Thanks to Ray for the nice drawing and his hint on how to obtain the negative driving voltage:

I would feed it from an IC op-amp, with a negative power supply, 
as an inverting amplifier with a gain of 1,7 a +5 signal input 
would make -8,5 v to the tube. The negative supply 
need not have much current rating, an ICL7660 charge-pump 
converter IC would do it well. 
(The classic ICL7660 may not quite make -8.5 to -10 volts.)