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Transistor numbers should not confuse you

A burnt transistor may confuse a technician especially if It has cracked and the numbers are no longer visible. this, however, should not worry you if you have the right information. for burnt transistors/ICs that have no clear markings consult a specialist, his article can help you identify If you read It to the very end.

A transistor like CD 7266 used in small amplifiers is the same as TDA 7266SAwhich is the readily available spare.regulators can come in bearing LM 7805 but the spare is L7805 a very common 5V regulator. also, KIA 730 found in inverters is the same as IRF 730.so what should you look out for when searching for an ideal replacement for a transistor or ic.

  1. Physical appearance-if they look the same and have the same pin configuration they probably are the same.
  2. No after the letter markings –D 2030 is The same as Tda 2030 D2822 IC is The same as TDA 2822.
  3. Where is it used-if he replacement IC/transistor is used in the same place and no 1 & 2 checks out then you have the correct spare?
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Tda 2030 amplifier

[the_ad_placement id=”new”]The Tda-2030 is an audio IC and is the most common IC found in many modern subwoofers/amplifiers, this is because it’s very cheap and easily available at least where I come from. Subwoofers with TDA 2030 as the audio IC have the problem of not lasting long as compared to those with other ICS. The TDA 7057 Buy TDA 7057AQ also isn’t that durable but that’s an article for another day.

So you have a sub woofer that is burnt what should you do.? throw It in the trash you could do that but that is not the only option. what if I told you that you could replace the circuit with a brand new amplifier and have a completely new experience. check the amplifier out here: Tda 2030 amplifier and also place an order for the same.

Other additions include USB slim board USB/Mp3 slim adapter or square MP3 decode board adapter square if you want to play music from a flash drive SD card or Bluetooth

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a guide to tweeter coils and drives

[the_ad_placement id=”header-code”]A question I get almost on a daily basis either through a phone call or one on one interactions with customers is, what type of coil does my tweeter drive have and which drive should I buy?.tweeter drives come in various sizes and types and knowing which coil you should use could be the difference between clear sound vs distorted /rough sound. this article is meant to address that issue.

Mass production tweeter drives come in about 10 different sizes, there is 25.5mm(spoon coil),34.5mm,35.5mm,38.5mm 44.4mm,51.0mm,51.5mm.also, 74.5mm and 99.2mm are available although not that common.
Different companies

 prefer different coil arrangements for their own reasons, a company like an eminence prefers coils with the together terminals in their tweeter drives for 44.4 and 51.5 https://phelectronics.co.ke/product/tweeter-coil-51-5/ same as Wharfedale and Neureton. Peavey and Jbl have the apart terminals
As a side note when buying a tweeter drive choose one whose coil is readily available and affordable to you. a drive that uses the 35.5mm coil has difficulties in finding the coils at least in my country Kenya.44.4 is the most easily available.