I have a 150va transformer with secondary of 24-0-24 un-use and since i have some free time I want to build a chip amp. From schematic it is quite easy to build and can do with simple point to point connection.
The problem now is which chip to choose with the transformer I have. Older chip LM3875, LM3886 and LM4780 or newer chip LME49810 and LME49811 or OPA548 and 549?
after rectification, your transformer will give you a +/-34V supply voltage. Your chipamp should withstand that voltage, including a 10 percent overvoltage margin. This voltage is too high for OPA548 and OPA549, they have a limit of +/-30V.
The LME49810/49811 is not a power amplifier. It is only a driver, which needs an externally connected and designed output stage.
LM3875 and LM3886, and also the stereo amplifier LM3780 will work and are easy to implement, with few external components.
|All times are GMT. The time now is 07:48 PM.|
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio