Carel_Integrated
Member
Hi all, I'm trying to build an amplifier. I got an old car radio, so I removed the AMP from it. It's a TA8205AH, manufactured by Toshiba. Even though this is a 2-Channel 18W amp, it sure outpust far more than just the rated 18W & it sure can handle more bass than my BoomBox 150w amp... So, with only this chip & a few resistors & capacitors, I want to build an AMP. I'm actually done with it, I'm just having trouble with configuring the "Feedback condenser". If anyone would want to help me out, before I continue, you'll most probably need this datasheet: http://www.datasheetcatalog.org/datasheet/toshiba/1145.pdf
Ok, the amp is working, but as mentioned, I haven't configured the Feedback condenser yet. In the datasheet, there are 2x of them, they are marked C2 in the circuit diagram. Toshiba recommends 47uF. The formula to calculate C2 is: 1/(2pie * fL * Rf). What the heck is fL & Rf? I've tested the AMP with a lot of capacitors & the moment I attach them, the bass immediately increases & makes the audio sound more WoW, but then obviously I cannot set the volume too high, unless I reduce the bass. Does anyone care to explain to me what the heck is the "Feedback condenser" & what's the purpose of it? And what is "determination of low cutoff frequency"? I'm afraid to use the recommended 47uF {The Audio sounds WoW, but then the AMP cuts off if the bass is too high}. Please check the datasheet, it'll help a lot.
Ok, the amp is working, but as mentioned, I haven't configured the Feedback condenser yet. In the datasheet, there are 2x of them, they are marked C2 in the circuit diagram. Toshiba recommends 47uF. The formula to calculate C2 is: 1/(2pie * fL * Rf). What the heck is fL & Rf? I've tested the AMP with a lot of capacitors & the moment I attach them, the bass immediately increases & makes the audio sound more WoW, but then obviously I cannot set the volume too high, unless I reduce the bass. Does anyone care to explain to me what the heck is the "Feedback condenser" & what's the purpose of it? And what is "determination of low cutoff frequency"? I'm afraid to use the recommended 47uF {The Audio sounds WoW, but then the AMP cuts off if the bass is too high}. Please check the datasheet, it'll help a lot.