amplifier

Hi All: I spent a few hours tweaking this using common parts to about 90% efficiency. It can do more power out with a > 36V supply. No AM modulation , yet.

Hello. I'm simulating a simple amplifier to be used as input and VAS stages for an audio power amp. It uses negative feedback. The gain is 20, fixed by the ratio of R4 / R3. I know this kind of circuits usually need some kind of frequency compensation to avoid oscillations. The circuit is...

Hi Team, I'm using TAS5414C-Q1 IC for audio amplifier. It has 4 channel analog inputs. I'd like to interface 2 channels from a 3.5 mm jack to these 4 channel inputs. How do I achieve this. Should I parallel the inputs. Is the below pic right way to connect in this regard...

Hi Folks, It seems that the gain in the IC TAS5424C-Q1 can be controlled using I2C protocol. But I'd like to keep it simple using a hardware (rotatory knob). Is it possible to control the volume and output power using hardware control such as a rotatory knob generally used in car head units...

Happy Thursday everybody! I managed to get what is probably a genuine Toshiba 1996 2SA1302 with green epoxy, to repair a PA, and started bending it's leads to match the original which have a semi-circle bent into them, presumably to allow for thermal expansion. They creaked and crackled a bit...

I was playing about with transistor amplifiers nd I built this class D amplifier intended for use with the arduino ( or any other microcontroller) https://siliconjunction.wordpress.com/2017/02/28/class-d-amplifier-for-the-arduino/ Thanks Matt!

We need to convert load cell output(millivolt) to (4-20)milliamps to give input to the PLC. Is there any IC or circuit diagram to directly convert millivolt to milliamps?

Hey guys I just uploaded my tutorial on how to build a simple audio amplifier using an LM386 chip. When using the maximum supply voltage it can reach a power output of roughly 1 watt. Hope you find it useful. Schematic <Mod edit: If you have something to share, please post it here. Do not...

i have a system that consists of a 12 volt 18 amp hour battery, a planet audio BB1200.4 class D 4 channel amp, a JBL GT5-15 sub in free air, and a battery tender charger. at first, i was using proel flash 8p mini PA speakers as mains, but tonight, i hooked up a brand new pair of JBL Northridge...

Greetings, I have several Sanyo Denki Py2 amplifiers (with BL Super P5 motors) , but dont have the PY-PC Interface Software (PYIF ). If anyone has this software (Ver 1.3 or higher), please share.

Hi all, Having played around with my new DVBT dongle I kind of like the idea of decoding ADSB signals. This is all fine and well but since I am not that close to an airport I see limited traffic. So the next logical step would be to get a LNA between my antenna and dongle, the not so logical...

this isn't exactly an "automotive" etc. application, but it will be a 12 volt system, just lacking an alternator. there are a few issues i need to iron out though. it was originally supposed to be a 36v system, but that created a lot of problems eg. separate batteries for an EQ/crossover or...

I am using fairly robust D882 and B772 transistors in my design, so I am wondering if I still need 4 damper diodes to protect the transistors as shown below? (Leaving them out saves a little on space and cost.)

Hello! First of all, i don't have much electronic knowledge, but here it goes. I have a small stereo amplifier with two 3W/4ohm laptop speakers with usb source. When my friend asked me to see what's wrong with it, it was completely dead, which proved to be the audio cable. So i replaced the...

I have a function generator (Escort EFG 2210) as a source to a UV-LED (LED255J ). The FG delivers about 7.5 Vrms and 30 mA pulse signal. The LED requires closer to 100 mA for optimal emission. The voltage is good enough. I have tried various amplifier circuits, but end up with less current than...

Hello everyone, I am new on the forum. I have a older kenwood kac-7251 2 channel amplifier. It still works great except one problem, it is causing a parasitic drain on my battery. Started about a month ago, I am a auto and diesel technician so I checked parasitic draw, pulled my amp fuse and...

So, I got my hands on this old Technics amplifier but the left channel is all loud crackle even at min volume while the right channel is clean and functional on all speaker settings (A, B, A+B). I inspected the boards and found 4 components completely burnt out. so much so that it was impossible...