Thanks for the diagram, but I don’t understand diagrams, you can draw in my drawing how to connect the wires to the diodes and the diagram with the marks in relation to my transformer with 6 terminals.
FM-222-MK1-19508 FM-222-MK2- 19208 FM-222-MK3-19200
https://gw.alicdn.com/bao/uploaded/i4/O1CN01tPqbJz1nMrLtKQXQ1_!!0-fleamarket.jpg_q50.jpg_.webp
Attachments
FM-222-MK1-19508
https://gw.alicdn.com/bao/uploaded/i3/O1CN01UMTmQe1Xst8posCOa_!!53-fleamarket.heic_q50.jpg_.webp
https://gw.alicdn.com/bao/uploaded/i2/O1CN01wmKzb21DtXFBH5DKj_!!0-fleamarket.jpg_q50.jpg_.webp
https://gw.alicdn.com/bao/uploaded/i2/O1CN01yXr0GA1tPVG086wRp_!!53-fleamarket.heic_q50.jpg_.webp
FM-222-MK1-19508 FM-266-MK1-19508
Attachments
I don’t want to offend anyone. But how can you assemble radio equipment without understanding the circuits, even a basic power supply? Isn’t it easier to find someone who is good with a soldering iron and assemble a construction set with him? After such manufacturing, replicas begin, like all the Chinese crap doesn’t work. On the Dartzeel forum there were a lot of dissatisfied people from those who bought bad components in the hope that they would sing for $20,000. Normal guys assemble and are happy. FM Acoustics are from the same series. There are different boards, if you save, the result is the same. No offense to anyone that hurt))
Did I say that the fm711 amplifier that I assembled does not work or sounds bad, it sounds great, but in the description they write and post a connection diagram that has nothing to do with my transformer that is connected to my amplifier, that’s why I write that I would draw how connect my transformer with zero to the amplifier, because... There is no zero in the diagram that was thrown off.I don’t want to offend anyone. But how can you assemble radio equipment without understanding the circuits, even a basic power supply? Isn’t it easier to find someone who is good with a soldering iron and assemble a construction set with him? After such manufacturing, replicas begin, like all the Chinese crap doesn’t work. On the Dartzeel forum there were a lot of dissatisfied people from those who bought bad components in the hope that they would sing for $20,000. Normal guys assemble and are happy. FM Acoustics are from the same series. There are different boards, if you save, the result is the same. No offense to anyone that hurt))
And it’s not clear how the green board differs from the yellow one; from the photo I see that it’s only the resistors and probably the color
And yellow boards don’t cost twice as much, why did you come up with this? Before buying, I analyzed all the sellers on AliExpress, but nowhere have I seen the price of a yellow board twice as expensive as a green one.
FM-19200 and FM-19208
https://gw.alicdn.com/bao/uploaded/i3/O1CN01fTySSm1nMrKEhIc5l_!!53-fleamarket.heic_q50.jpg_.webp
https://ae01.alicdn.com/kf/S803cb6b...lifier-Kesamaan-Komponen-Mesin-Asli-Lebih.jpg
https://ae01.alicdn.com/kf/Ha8016f4...-Amplifier-Cocok-FM711-FM711MKII-FM711MK2.jpg
https://gw.alicdn.com/bao/uploaded/i2/O1CN01H42xq21ZYr5r0U2mZ_!!53-fleamarket.heic_q50.jpg_.webp
https://gw.alicdn.com/bao/uploaded/i4/O1CN016sLWUC21GoeqZypCl_!!53-fleamarket.heic_q50.jpg_.webp
https://gw.alicdn.com/bao/uploaded/i3/O1CN01ugkj1t1ZYr6caFh5u_!!53-fleamarket.heic_q50.jpg_.webp
https://gw.alicdn.com/bao/uploaded/i3/O1CN01fTySSm1nMrKEhIc5l_!!53-fleamarket.heic_q50.jpg_.webp
Attachments
I didn’t want to offend you, but you are a bad analyzer)). Without seeing the diagram, you compare clones. Write to me in a personal message here or on the Russian site where you ask questions, I will try to explain and help. https://aliexpress.ru/item/10050025....productlist.search_results.10.69d02746qqRbOK https://aliexpress.ru/item/10050056...w.productlist.search_results.1.69d02746qqRbOK 😉
Attachments
https://www.accuphase.com/historys/c-265_e1.htm
Balanced Output Stage With Bridged Feedback
In balanced signal transmission, two identical signals are transmitted simultaneously with inverted phase and combined at the receiving end, thereby canceling out common-mode noise and interference. This assures pure high-quality signal transmission. The principle of balanced sound transmission is shown in Figure 4. The outputs of the two amplifiers AMP1 and AMP2 are connected to form a cross-feedback loop, which sends the symmetrical (+) and (-) signals with low impedance to the next stage. The signals are isolated from the ground line, resulting in an ideal balanced circuit. Even if one side of the output is grounded, both amplifiers continue to operate, and the output voltage does not change.
https://gw.alicdn.com/bao/uploaded/i1/O1CN01nS3SXf1O6Udxz36FL_!!2-fleamarket.png_.webp
Balanced Output Stage With Bridged Feedback
In balanced signal transmission, two identical signals are transmitted simultaneously with inverted phase and combined at the receiving end, thereby canceling out common-mode noise and interference. This assures pure high-quality signal transmission. The principle of balanced sound transmission is shown in Figure 4. The outputs of the two amplifiers AMP1 and AMP2 are connected to form a cross-feedback loop, which sends the symmetrical (+) and (-) signals with low impedance to the next stage. The signals are isolated from the ground line, resulting in an ideal balanced circuit. Even if one side of the output is grounded, both amplifiers continue to operate, and the output voltage does not change.
https://gw.alicdn.com/bao/uploaded/i1/O1CN01nS3SXf1O6Udxz36FL_!!2-fleamarket.png_.webp
I have trouble understanding the complementary output . a strange weak emitter follower as a load
Gentlemen,
I am looking for two FM19202 and one FM19206 clone modules.
Preferably "naked", all components visible without potted case.
Anyone has it for sale please PM me, thanks.
I am looking for two FM19202 and one FM19206 clone modules.
Preferably "naked", all components visible without potted case.
Anyone has it for sale please PM me, thanks.
But there is no dc protection circuit in the schematics of fm acoustics amps.
How to dc protect this amplifier for any kind of short circuit?
How to dc protect this amplifier for any kind of short circuit?
the circuit has a strong pullup capability , but a weak pull down, thus on short the output capacitor will be charged up, and stays there. Also the 100 ohms resistors in the collectors limit the current.
