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LM4780 Power Amplifier
Posted on Thursday, May 19, 2011   •   Category: Amplifiers

LM4780 Power Amplifier

Having decided to build an ultra-compact design, using a spare LM4780 seemed like an obvious plan. Having said that, I might choose a different IC if I didn't already have one to hand. The LM4780 contains two LM3886 dies (reference) giving 60 watts per channel, which is rather more than required this application. National Semiconductor make an enormous range of IC's with differing power levels and configurations, and there are plenty of possible candidates for this application - after all, we only need a few watts as this amplifier will principally be driving small speakers on the computer desk.

     HA1377 Bridge Amplifier BCL cap 17W (Car audio)
     LM3886 Gainclone 2x68 Watt Power Amplifier
     OCL Power Amp
     50W LM3886 Power Amplifier
     TDA2030 Amp OTL 15W
     TDA2050 Stereo Audio Power Amplifier
     300W 6x LM3886 Bridged Power Amplifier
     56W LM3886 / LM3876 Gainclone
     68W LM3886 Amplifier
     LM3875 Power Amplifier
LM4780 Power Amplifier

 

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]



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