GMI-7
Pulse modulator beam tetrode
Description
Purpose and application
GMI-7 is a glass pulse modulator beam tetrode for high-current switching in pulse modulators. It is selected by the complete designation because the execution suffix is significant.
Full descriptionCollapse description
Construction
The tube has a glass baseless envelope, an indirectly heated oxide cathode, a top anode contact and a multi-contact lower mounting section. Heater voltage is 23.5–28.5 V and current is 6.0 ± 0.4 A.
Operating data
Minimum pulse anode current is 52 A. Pulse first-grid current is no more than 9 A, pulse second-grid current no more than 10 A, and grid cutoff voltage no more than 900 V.
Cooling and selection
Natural or forced-air cooling may be used according to the installation. Mass is approximately 800 g and minimum service life is 1000 hours. The base, top contact and glass must be checked before installation.
Vacuum device construction is outlined in the vacuum tube article. Related products are listed under generator and modulator tubes.
Technical details
- Designation
- GMI-7
- Device type
- Pulse modulator beam tetrode
- Envelope
- Glass, baseless
- Heater voltage
- 23.5–28.5 V
- Heater current
- 6.0 ± 0.4 A
All specificationsCollapse specifications
- Minimum pulse anode current
- 52 A
- Maximum pulse first-grid current
- 9 A
- Maximum pulse second-grid current
- 10 A
- Maximum reverse first-grid current
- 350 μA
- Maximum grid cutoff voltage
- 900 V
- Maximum input capacitance
- 120 pF
- Maximum output capacitance
- 18 pF
- Maximum transfer capacitance
- 0.9 pF
- Cooling
- Natural or forced air
- Mass
- Approximately 800 g
- Minimum service life
- 1000 h
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms