Radio Antica e Radio d'epoca
XL7900
|
Stato:
Olanda
|
|
| Identico a |
XL7900
|
| Zoccolo |
Magnoval (9-Pins), B9D
Top contact with a cap.
|
| Utilizzata per |
Technology / Measurement |
| Filamento |
|
| Descrizione |
This is a very special vacuum-sealed vibrating capacitor, intended to operate as modulator for very feeble DC signals, replacing electro-mechanic vibrating choppers. Amplifiers capable of measuring currents as low as 500 electrons per second have been realised using this device.
- Insulation resistance greater than 1000 teraohms
- Capacitance of Cdr and Cm 35 pF
- Resonating frequency between 5.3 and 6.3 kHz.
Magnoval base, gold-plated pins
* Cdr = Driving capacitor
* Cm = Measuring capacitor
Philips Holland design.
|
| Bibliografia |
-- Original-techn. papers.
|
|
XL7900: Manufacturer's Literature
Emilio Ciardiello
|
Just Qvigstad
|
XL7900: PHILIPS
Ulf Krahnepuhl
Segue ...
|
Collezione di
|
|
|
|
[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
|
|
|
