This is a Simple Systematic Power Booster Circuit Diagram. The Power
Booster solves the power distribution problem in a CATV network caused
by high resistance and low energy-efficient. This power booster
functions as a high-efficiency `power multiplexer` or, if you supply an
external signal-source, as a high-power linear amplifier.
Simple Systematic Power Booster Circuit Diagram
If you want to drive a load with a high-power square wave, the circuit
simply draws power from two external power sources, VI and V2,
alternately. In this mode, the circuit`s power-handling devices function
as switches, dissipating minimal power. The RC time constant of the
integrator, IC1, determines the circuit`s oscillation period. If you
supply an external drive waveform, the circuit functions as a linear
amplifier, and, consequently, inherently dissipates varying portions of
that power.
The power amplifier is stable for gains > 15. Diodes D1 and D2
limit the FET`s gate-voltage swing to less than 15 V. D3 is a dual
Schottky diode that protects the FETs from short circuits between the
two supplies, VI and V2, through a FET`s parasitic diode. With D3 in
place, you can choose either power channel for the higher voltage input,
lb drive the FETs, Q5 and Q6, at switching frequencies greater than 1
kHz, you will have to use gate drivers for them.
