4x Dual J-fet OPAMP IC Njmd JRC Op-amp Njm d. Be the first to write a review. About this product. Picture 1 of 3; Picture 2 of 3; Picture 3 of 3. Hey I’ve got an old keyboard amp lying around, and It’s got four 8-pin IC’s in it, labelled D JRC Anybody have any idea on what these. EPCOS AG. Part No. CXOD-FREQ-OUT3. Description, CRYSTAL OSCILLATOR, CLOCK, MHz – MHz, TTL OUTPUT. File Size, K / 1 Page.

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I’m trying to use passive filtersnoise and “ugg” no more.

Question Posted by crash in forum: A TL or TL is very common and is available everywhere except not on the moon, are you there? The TL from Texas Instruments and copied by many English speaking companies never oscillates because it has proper frequency compensation.

You May Also Like: New Japan Radio says on its datasheet for the NJM that in certain applications like a follower low gain it may oscillate. You must have a wiring or shielding problem if there is noise that is reduced when you touch its ground.

Any help would be appreciated! This chip is in a dual gain stage of a solid state guitar amp. You will need dual power supply.

Click here to register now. May 7, 67 7. Based on the datasheets they are extremely similar with the exception of the slew rate. But when I buy componentsI forget it.


Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Digital potentiometers are shown but a dual-ganged manual pot will also work. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at I put the old one back in and unplugged the reverb tank and the problem went away. Dec 28, 2.

Potentiometer Questions Started by norbss Yesterday at Low frequency hum from the 50Hz or 027d electricityhigh frequency hiss or radio interference??

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I used 2 Tda to drive subwoofer speaker. However the reverb on this amp does function quite well so I’m still scratching my head For a better rjc, please enable JavaScript in your browser before proceeding.

For an accurate crossover the satellite amplifiers need a highpass filter that matches the lowpass filter for the subwoofer. I use 1K resistor and 1uF, and and variable resistor to control cutoff frequency point, but the variable seem be not effect. Link 0772d the circuit http: Articles Top Articles Search resources.

Thread starter Nikolai Petrenko Start date Oct 8, jec By continuing to use this site, you are consenting to our use of cookies. Nikolai Petrenko Member Oct 19, Or many other types also. They are near as damn it the same thing.


But I concern to reduce noise. I think the New Japan Radio opamp uses Toshiba’s design. Forums New posts Search forums. December Automotive Industry Roundup: What is wrong about active 072f Now you say there is noise but you did not describe the noise. Nikolai Petrenko Member Oct 11, You can certainly use the NJM parts. Either way I have since discovered that the chip is not the real problem anyway.

Then I installed a brand new CP and has the exact same jrx. Media New media New comments Search media. Filter circuit from construyasuvideorockola. Satellite speakers drive by 1 LA Problem of subwoofer amplifier. Nikolai Petrenko Member Oct 15, A Randall RH G2 to be exact.


Quote of the day. The digital modem for my cable internet causes a clicking noise in my nearby stereo 072e in my jdc telephone. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. To participate you need to register. I only use one of its channels. First I tried a used one I had laying around and the 2nd gain stage would not function at all Just saying hello Started by MichaelaJoy Yesterday at 6: