Z502S (Mullard)
Dekatron counting tube
Bi-directional double-pulse decimal counting tube.
Neon
filled.
The following pictures show the tube spinning.
Of course, only one of the cathodes is glowing, but the opening time of the
camera leads to that different pictures:
a middle opening time of the camera:
a short opening time of the camera:
a long opening time of the camera:
by night, with long opening time of the camera:
An animation of a spinning dekatron:
| German | English | ||
| Röhrentyp | Tube type | Z502S | |
| Hersteller | Brand | Mullard | |
| Vergleichstypen | Substitutes | GS10C, GS10C/S, M2465-402, CV2325 | |
| Zähl-Richtung | Counting direction | bidirectional | |
| Arbeitsweise | Operation | double pulse | |
| Art | Sort | SEL | |
| Sockel | Base | B12E | |
| Fassung | Socket | B12E | |
| Nullposition | Zero position | pin10 +6° | |
| Zähl-Schritte | Counting steps | 10 | |
| Anzahl der Hilfskathoden | Number of guides | 2 | |
| Gasfüllung | Gas filling | Neon | |
| Röhrendurchmesser maximal | Tube diameter max. | mm | 33,1 |
| Röhrenhöhe maximal | Tube height max. | mm | 88,5 |
| max. Zähl-Geschwindigkeit | Max. counting speed | kHz | 4 |
| Betriebsspannung minimal | Supply volt. min. | V | 400 (350) |
| Betriebsspannung typisch | Supply volt. typ. | V | 475 |
| Brennspannung minimal | Maintaining voltage min. | V | 186 |
| Brennspannung typisch | Maintaining voltage typ. | V | 191 |
| Brennspannung maximal | Maintaining voltage max. | V | 196 |
| Anoden bzw. Kathodenstrom min. | Anode/cath. current min. | µA | 250 |
| Anoden bzw. Kathodenstrom typ. | Anode/cath. current typ. | µA | 340 |
| Anoden bzw. Kathodenstrom max. | Anode/cath. current max. | µA | 550 |
| Netzteil Leistung minimal | Power supply power min. | mW | 261,25 |
| Anodenwiderstand typisch | Anode resistor typical | kΩ | 820 |
| Spannungsdifferenz zw. 2 Kath. max. | Voltage between 2 cathodes max. | V | 140 |
| Transferspannung minimal | Transfer voltage min. | V | 35 |
| Hilfskathodenvorspannnung minimal | Guide bias volt. min. | V | 35 |
| Hilfskathodenvorspannnung Impulsbetrieb typ. | Guide bias typ pulse op. | V | 40 |
| Hilfskathodenimpulsspannung | Guide signal voltage pulse | Vp | 100 |
| Hilfskathodenimpulsdauer minimal | Guide signal pulse duration min | µs | 75 |
| Hilfskathodenimpulsdauer (Rechteck) min. | Guide rectangle pulse duration min. | µs | 65 |
| Kathodenwiderstand typisch | Cathode resistor typical | kΩ | 120 |
| Resetimpulsspannung | Reset pulse voltage min. | V | -120 |
| Anschlussbelegung: | Pinout: | ||
| PIN 01 | PIN 01 | K0 | |
| PIN 02 | PIN 02 | K9 | |
| PIN 03 | PIN 03 | K8 | |
| PIN 04 | PIN 04 | K7 | |
| PIN 05 | PIN 05 | K6 | |
| PIN 06 | PIN 06 | K5 | |
| PIN 07 | PIN 07 | K4 | |
| PIN 08 | PIN 08 | K3 | |
| PIN 09 | PIN 09 | K2 | |
| PIN 10 | PIN 10 | K1 | |
| PIN 11 | PIN 11 | G2 | |
| PIN 12 | PIN 12 | G1 | |
| Kappe in der Mitte | center cap | A |
Pinout & Outline:
Downloads/Datasheets:
Document #050: ETL datasheet: GS10C tube
File: GS10C.pdf
Document #028: Ericsson book "Electronic Counting Circuits" - Dated 1967
File:
Ericsson-Databook.zip
Document #051: ETL datasheet: GS10C/S (CV2325) tube
File: GS10C-S_CV2325.pdf
Document #160: Raytheon Catalog SP-7649-360-20M - Dated 1961
File: Raytheon-cat01.pdf
Document #278: Magazine (unknown title): Ericsson ad: GC10D and GS10C tube
File: GC10D_GS10C.pdf
Back
to Dieter's Nixie Tube Page
eMail to Dieter
Disclaimer
Impressum