M2 2M-1K2 Instruções de Operação descarregar pdf (Página 7)

voltage also passes through the transformer. The emitter of the device is grounded to its flange base (header) which in

turn is attached to the copper heat spreader. There is a common ground then in the system between the chassis, the PC

board and the heat sink system. This ground connection is very important for heat transfer and also for total device current

flow.

On the output side of the device, lar

e PC board traces provide hi

h power, hi

h current connections to two

cross-connected 10 ohm coax line sections. These line sections form a 9:1 Impedance step and transform the very low

drain impedance up to about 25 ohms, balanced. A high current dc ferrite choke brings the 50 VDC to the drain side of the

device. Various tuning, blocking and bypassing capacitors aid in the balanced tank circuits transition through a coax line to

50 ohms, unbalanced. Following the tank circuit is a multi-section low pass filter and harmonic trap. The filter is followed

by a high power vacuum relay, the VSWR bridge and finally the output SO-239 or female ‘N’ connector.

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M2 2M-1K2 Instruções de Operação Página 7