LM3876 PDF

LM LM – High-performance 68W Audio Power Amplifier With Mute, Package: to , Pin Nb=11 LM Overture Audio Power Amplifier Series. 13 Aug LM is a high performance audio power amplifier IC from National Semiconductors. The LM can deliver 50watts of output power into. Buy LM – Audio Power Amp (56W): Power Amplifiers – ✓ FREE DELIVERY possible on eligible purchases.

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Could you please repeat the question? It also analyzes transistor’s characteristics such as voltage and gain. Headphone amplifier is small enough to fit in Altoids tin box, and thanks to low power consumption may be supplied from a single 9V battery. TF versions can be directly screwed to the heatsink with thermal grease applied. This was actually the intent of the original designers. The capacitors used after ufuf 50V will bump this up to around 30V.

Always double check your soldering on the amplifier and power supply before connect to power.

56W LM / LM Gainclone

You can control lights, fans, AC system, computer, printer, amplifier, robots, garage door, security systems, motor-driven curtains, motorized window blinds, door locks, sprinklers, motorized projection screens and anything else you can think of. No IC LM amplifier here. All the grounds including input negative and speaker negative get joined together on the PCB and to lm8376 0V point which goes to the mains earth.


You will require one of these circuits for each speaker. It is an lm386 tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors. Your email address will not be published. Some modifications are made on the original circuit for improving the performance. Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden l3876 IC socket. The newly created question will be automatically linked to this question.

Kind regards, Hirotaka Matsumoto. Leave a Reply Cancel reply Your email address will not be published. Menu Search through millions of questions and answers User.

Just a 50 watt mosfet amplifier instead. Alternatively, the P19 amp can be run at higher gain than normal, alleviating the need for l3m876 preamp at all.

LM3876 Gainclone Amplifier

No license, either express or implied, by estoppel or otherwise, is granted by TI. I have included a screen shot of the datasheet for the LM below:. Quiescent current of LM is around 70mA.

Test the voltage produced by the power supply before connecting to the amplifier circuit and ensure that it is correct. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site.

Ask a related question Ask a new question. I used a cut-down P88 preamp PCB because I only wanted one preamplifier stage, but the entire board can also be used. It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors.


If you are powering more than 2 channels a VA or VA transformer is recommended. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground.

If you have a related question, please click the ” Ask a related question ” button in the top right corner. Is my understanding correct that you ask if you can leave LM pin 5 floating? I have included a screen shot of the datasheet for the LM below: But, the ampere rating of that power supply is lm387 Amperes. Use shielded microphone cable from the RCA connectors to the volume pot and to the amp pcb and keep these wires as far away from the AC line otherwise you’ll get funny humming noises Ok, it l3m876 been corrected….

56W LM3886 / LM3876 Gainclone

Do you have another question? The LM can deliver 50watts of output power into an 8 ohm loudspeaker.

TI is a global semiconductor design and manufacturing company. The feedback resistor R2 sets the gain of the amplifier.

Mentions Tags More Cancel. Never run the amplifier without a heatsink attached to the LM chip s 3.