EC1000: Difference between revisions
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{{Spec | Cathode current | 22 mA max.}} | {{Spec | Cathode current | 22 mA max.}} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
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==Data== | ==Data== | ||
* [[Media: | * [[Media:Philips EC1000 data sheet.pdf|Philips EC1000 data sheet]] | ||
* [[tube:ec1000|ec1000@ radiomuseum.org]] | * [[tube:ec1000|ec1000@ radiomuseum.org]] | ||
Latest revision as of 05:39, 14 September 2023
The 8254 (European: EC1000) is a subminiature triode vacuum tube designed for preamplifiers in measurement probes or microphones (used e.g. in early versions of the Neumann M149).
Philips EC1000 = Mullard 8254
The EC1000 is used as the front-end cathode-follower in the P6025 and P6032.
Key Specifications
| Heater | 6.3 V, 185 mA |
|---|---|
| Anode voltage | 110 V max. |
| Anode power | 1.5 W max. |
| Transconductance | 14.5 mA/V @ 15 mA |
| Cathode current | 22 mA max. |
| Aged/Checked/Matched Pair Details | ||
|---|---|---|
| Used in | Tek Part# | S/N Range |
| ? | 157-0100-00 | N/A |
Data
Used in
Some instruments using part EC1000
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| P6025 | Tektronix | Probe | P6025 | 400 MHz cathode follower probe | (?) |
| P6032 | Tektronix | Probe | P6032 | 850 MHz cathode-follower probe | 1962 |
