amplifier

I have an old bronken sony cdx-gt207x and I wanna know if it´s possible to make an amplifier with his tda.

I'm designing a quad-preamp circuit (for an experimental musical instrument). Each pre-amp channel is read by the analog input of a microcontroller before being summed together. The issue is that there is a ton of crosstalk being reported by the microcontroller between the four channels. I'm...

Hello, I work on an exercise I made up for myself and I need some help. I want to build a small RF receiver with a central frequency of 50MHz. I made a model of the antenna. I put a band pass filter after it. Both are centered around 50MHz. I want to amplify the received sine with a 7V voltage...

So I am planning to use an AD620 instrumentation amplifier in my circuit. The gain formula is G = 1+(49.4KOhm/Rg), Rg being the deciding resistance value. By that logic if a 100K preset or Pot is set to zero, Gain attempted is (∞ + 1), which besides being impossible is also way above the 10000...

I want you make a amplifier with 500 voltage gain and use a amplifier with common emitter, but I can't get a gain over the 100 with any value of resistors. Vdd is 12 V and b is 100

Hello, I am a student tasked to build a working amplifier, I do not know much of what I am doing. I've got a three-stage configuration that consists of a single ended differential input stage, a common-emitter VAS stage, and a Sziklai pair output stage. It's supposed to be a 15W amplifier to a...

So I purchased this : (HanRongDa HDR-831) HanRongDa HDR-831 It's working great but the practical range is about 15 meters. I'm looking to upgrade this. The thing is, I know very little about radio frequencies and antennas. Can something like this work ? Ebay Amplifier The device I purchased...

Is there any problem of my circuit? How can I fix the clipping?

What is the purpose of this circuit?

Hi, I'd like to build one of these: https://phys.org/news/2006-04-lunar-buster.html Basically it's a sort of static electricity linear motor that pushes dust around. I understand general principles of electronics and have built a few circuits from kits, but that's about it. I figure this...

I'm looking into this (attached) schematic for a bass amp. I'm not sure, why the low voltage supply (+-16V) has his own transformer windings, regulators etc. but then it's connected to the hugh voltage rail? (I've circled in red) Thanks

Hi all, I bought capacitors of 22kµ instead of 2.2kµ. I was wondering whetther this circuit could still work with the 22kµ and what the effect is on the circuit. I'm not a electrical engineer so my knowledge is rather limited in this field. My best guess would be that these are used for the...

Hi All, I am trying to setup my Sony N500 Xplod Car Amplifier in home environment. I have presently a 20A fuse placed in a 25A socket of the Amplifier. Its input is 12V. So I believe a SMPS of 25A 12V will suffice its working. I am intending to change the 20A fuse to 25A as well to support...

I'm trying to modding HackRF one rtl-sdr card, regarding this articles card have problem with tx bellow 100 MHz, lots of user complains about burning card, precisely MGA-81563 chip, I already burn once MGA-81563, and I replaces two of them. Someone suggest LVA-123+, but pins construction are not...

I'm trying to detect the source of the problem and hope you can help me to where should i look for it. So when I'm raising the volume on the amplifier the hum gets more quiet then if its 0 volume.(Without any input, just the speaker connected) It's not ground loop probably. Already checked.

Hello I really need your help I need a circuit to change amp of Pwm Input : pwm 12V 5Amp Output: pwm 12V amp between 15-50 amp I have to say I don't know programming or program any type of IC I know I have to pay money for design a circuit like thus, but I live in Iran we can't and don't let...

Hi! I have bought a headphone amplifier which I have made small changes to. The two things I've done is: - disconnect the on-off button by soldering a cable between the poles - adding longer wires to the diode so that the led could be attached a bit from the amplifier What have happend...

Is the second pole in the node marked in red? I am not sure

So here's the circuit: I think M2 is a common source amplifier and M4 a common gate amplifier, so they form a cascode amplifier where the gain is given by : Av = -gm2 * r0, r0 is the impedance at the node where the drain of the common gate amplifier is at (Vop). r0 = ( [rds8 // (rds2a * (...

Hi all, My requirement is to connect an additional light in parallel to my car's interior cabin light. My car supports upto 10w and I already have a 2W LED bulb inside, and the additional light is about 25W, so connecting it directly is not an option. So I connected a 12v relay with the signal...