EC1000
(Redirected from 8254)
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 | Description | Introduced |
|---|---|---|---|---|
| P6025 | Tektronix | Probe | 400 MHz cathode follower probe | (?) |
| P6032 | Tektronix | Probe | 850 MHz cathode-follower probe | 1962 |
