I use op-amps in electric guitar effects pedals in conjunction with transistors to create overdrive, distortion and other musical effects. My knowledge is limited technically but I learning through practical experience. I have come across an unusual circuit that I Canaletto sense of: the parts...
Hello guys! I have a couple questions for you. I have a '11 Civic Si sedan. I would like to upgrade the Sub and Amp. I was thinking of going with a single 8 but leaning towards a 10". I did have a 1-10" JL Audio in past, but I'm not sure if there is something better. 1)Which Amp and Sub would...
I am having huge difficulty with op amp circuit used in TA7642 radios, I cannot figure out how to attach the lm301 chip to have a gain of more than 200 (10 u cap between pin 1 and if I give it too much signal in 50 k ohm pot then the radio just makes a farting noise. My problem is that I need to...
Hello, I am wondering if I can replace the speaker with 3.5 mm audio jack and input the audio to my laptops microphone in so I can record the sound using a software such as audacity. I don't know the input specifications and afraid that inputting amplified voltages over 5 volt would damage the...
Hello, I am wondering if I can replace the speaker with 3.5 mm audio jack and input the audio to my laptops microphone in so I can record the sound using a software such as audacity. I don't know the input specifications and afraid that inputting amplified voltages over 5 volt would damage the...
I have some TDA7498 Audio Amplifier. It is ok. But on quitly passages (especially if someone talks or so) it has a some nasty Background noise. It disappears if there is is no audio input Level (Moderator makes a break on the end of a Phrase for example). It appears suddenly if the Moderator...
I have a drummer who has a board which he runs his drums through, amplifying the sound even more. I currently run 600 watts and find it's still not enough!! I know crazy!! I find a lot of distortation especially when I am using active basses. What do you think of using DC power amps? Small...
Please consider this DIY phono pre-amp.
The text states, that resistors R9 and R22 may be exchanged for potentiometers for gain control.
Since the circuit uses 1.2k? resistors for R9 and R22, I was wondering what kind of potentiometer I'd need. I was thinking of a logarithmic 10k? pot...
i built this DC motor power amplifier to drive the motor in both directions using an analog signal (from -1 volt to 1 volt via the potentiometer ) , the motor i use is rated for 24 volts and draws around 400mA at no load , however, when i tested it only one direction works fine ( the NPN TIP142...