LM Audio Power Amplifier Series Stereo High Fidelity Volt Driver with Mute. The is a high fidelity Details, datasheet, quote on part number: LM LM datasheet, LM circuit, LM data sheet: NSC – LM Overture Audio Power Amplifier Series Stereo High Fidelity Volt* Driver with Mute. LM Audio Power Amplifier Series Stereo High Fidelity Volt Driver Note 8: Datasheet min/max specification limits are guaranteed by design, test.

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Replacement Transformer Started by ncag Today at 7: If you obtain similar DMM readings, you may proceed with music test. The prototype unit was connected to a modified LM tone control preamp. Thread starter discostuee Start date Mar 30, Transistors Q1 and Q2 are populated at the bottom of the PCB and physically make contact with the aluminum bracket as well as the heatsink of the power output transistors.

If a Variac transformer is availableconnect the AC input of the power supply to the output of the Variac transformer. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

Use a heat sink for the LM By continuing to use this site, you are consenting to our use of cookies. The LMC is targeted at high volume applications. If you going to build your own amplifier do datzsheet all at once, Then you have a way to expand your system when you need to. Potentiometer Questions Started by norbss Yesterday at Bear in mind for DJ use, and for a sub in particular, it will be run continually at high sustained powers – it needs to be very well built, and to have massive cooling capability.

The prototype uses the LM C version, which has a lower voltage operating range, but other key specifications and features are basically the same. However both test procedures with or without the use of a Variac transformer will be explained. Contact Us Questions about a project: It also provides inverse thermal tracking to maintain the bias level as the output stage temperature changes. To participate you need to register.

They will give you far more control and function than you could ever build for the same price. That makes sense now thanks.

LM Datasheet(PDF) – National Semiconductor (TI)

Forums New posts Search forums. Both genuine devices are available from Fairchild Semiconductor. The Lmm4702 device is limited to 5mA of output drive current capability.

The leads should be shorted.

I would just put a log pot on the inputs. The LM ‘slevels. Factory made is easier and better for getting one of them.

LM4702 Datasheet

The amplifier achieves very low distortion and noise levels with only about 15 to 20mA of bias current. But crossovers can take pm4702 a lot of time and money. Media New media New comments Search media.

A very high ammeter reading indicates that a component in the circuit is drawing too much current. The LM ‘s mute function, when activated, mutes the input drive signal and forces theapplications and performance levels. Building a good amplifier is easy and rather cheap. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

No abstract text available Text: Username Password Register Forgot Password? The picture above shows a DC offset voltage for channel 1 at 3. Why all the DMMs? Can someone supply a schematic, cheers.

As far as crossovers just buy a good preamp crossover unit on eBay or from a local pawn shop or electronics l4702.