When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Condition of the new product. In the original packaging. 1pcs.
U-74B
Generator tetrode GU-74B in a metal-ceramic design with an indirect oxide cathode and forced air cooling.It is designed to amplify high-frequency oscillations at frequencies up to 60 MHz with an output power of at least 550 watts.Tetrode GU-74B is used to work in broadband non-tunable amplifiers and to enhance the power of a single-band signal in radio engineering devices of mobile and stationary equipment for general and special purposes.It is available in a metal-ceramic design with an external anode and annular electrode terminals.It works in an upright position, with the terminals facing down.Forced air cooling of at least 35 m3/h.
Characteristic
The main technical parameters of the GU-74B are:
at Uh=12.6 V, Ua=1 kV, Uc2=300 V, Ia=600 mAIncandescent current3.6 ± 0.3 A
The offset voltage of the 1st grid is negative24 ± 6 V
The anode current (at Ua = 250 V, Uc1=0)is not less than 1400 mA
The current of the 2nd grid (at Ua = 250 V, Uc = 0)is not more than 360 mA
The current of the 2nd gridis not more than 20 mA
The current of the 1st grid is reversedno more than 50 µA
The steepness of the characteristic32 ± 6 mA/In
The gain of the 1st grid relative to the 2nd grid6,5 ± 2
Oscillatory power in class AB1 mode- at Uh =12.6 Vat least 550 watts
- at Uh =11.3 Vat least 440 watts
The readinesstime is no more than 2.5 minutes
Interelectrode capacitances, pF:- input51 ± 5
- output11 ± 2
- pass0.09
Durabilityof at least 1000 hoursMaximum performance characteristics of GU-74B:Incandescent voltage11.9 - 13.3 V
Cathode current (effective value)1.5 A
Anode current0.5 A
Anode voltage:constant2 kV
peak4 kV
Voltage of the 2nd grid300 V
The voltage of the 1st grid is negative150 V
The power dissipated by the anodeis 600 W
Power dissipated by the 2nd grid15 Watts
Power dissipated by the 1st grid2 Watts
Operating frequency60 MHz
Shell temperature200 С
Ambient operating temperature range from -60 to +50 C
