150W power amplifier circuit
circuit
review-diagram B above. It is almost identical, except for connections
SIM have been removed and some signs of components have been displaced.
220UF 100nF Although I have shown how C1 3.3UF Electro bipolar, you can
use the CAP polyester, if you want. If power will be used for
serednochastotnyh or tweeter in the system biamped or triamped, C1 may
be reduced by the cost 100nF (-3dB at 72Hz). For general use, you can
use a 1uF polyester, giving-3dB frequency of 7.2Hz, but bass extension
is better with a higher value, as shown.
New circuit boards can
work as Dual Mono Power – PCB track can be divided, and each amplifier
is powered by its own proposal. Although IMO not much sense, it also
enables the PCB, halved and each half has its own power connector. The
output connections can be made for printed circuit pin, or you can use
to pay “shovel (AKA speed connection) LUG – Council provides regulations
on this subject.
More details can be construction, purchase of PCBs, and all options are described in detail.
As
you can see, there are provisions to use TDA7294 well. This circuit is
almost identical, but a specification higher. There are links on the
board to connect contacts 1 and 5 (it should not be connected to the
TDA727). Use TDA7294, fees can run bridged (BTL or bridge tied load) to
about 150 W at 8 ohms. I think P87B be used to provide phase signal is
necessary for BTL operation. Although it is common to see AMP as a
reversal, there is a very low resistance at first, and may lead to
unacceptable pressures and possible distortion. P87B be managed
separately by each amplifier, and the best way to control the
amplifiers.While parallel operation is often recommended, I strongly
recommend that you run the amps in parallel. There are very strict
requirements for greater tolerance for parallel operation – usually
amplifiers must correspond to 0.1% or more for all audio traffic and
beyond. A very low output resistance of members, even inconsistencies
100mV (instantly, any voltage and frequency) can cause large amounts of
current flowing through the circuits. Although 0.1Ω resistors are
usually offered, inconsistencies 100mV voltage (0.15% at the peak
voltage 60V) 0.5A cause a circulating current. This leads to overheating
and protection of anger involved.
