⚡ Building a Bipolar Power Supply +/-20...50V 10A (+L7812 L7912) with a Transformer for an Amplifier
✅ $2 for 1-4 Layer PCBs, Get SMT Coupons: https://jlcpcb.com/DYE
Hello everyone! This video shows the assembly of a simple dual-polarity power supply (+/-20...50V, 10A) with a low-power stabilized +/-12V output and a toroidal transformer. As an example, the video shows the connection and operation of the assembled power supply with a dual-polarity amplifier based on the TDA7293 chip.
⏩ Link to the archive with Gerber and LAY files:
https://drive.google.com/drive/folder...
⏩ Links to some radio components:
✅ https://got.by/5ka5ri - radio components store
✅ https://alii.pub/5q417s - 4700µF x 50V capacitors
✅ https://alii.pub/5n1xlu - L7812 positive voltage stabilizer
✅ https://alii.pub/5q40qa - L7912 negative voltage stabilizer
✅ https://alii.pub/5n1xci - stabilizer heatsinks
✅ https://ali.ski/yOJJ4 - ESR tester for radio components LCR-T7
✅ https://ali.ski/ULFBAm - LCR-T4 ESR Radio Component Tester
✅ https://ali.ski/B7gmNx - POS60 Solder
✅ https://ali.ski/h4ywOz - FR4 PCB
Some parts were purchased at a radio market.
⏩ Video on assembling a TDA7294 amplifier:
• 🔊 Hi-Fi усилитель мощности звуковой частот...
⏩ Mini tabletop circular saw (I cut boards)
• 🔁Настольный Циркулярный станок для резки п...
🔻🔻🔻 For those willing to support financially, with advice, or with questions
💲👉 https://donatello.to/RadioLab
Timing:
00:00 - Introduction
00:38 - Schematic and PCB
00:56 - Ordering PCBs from JLC PCB
01:48 - JLC PCB boards
02:48 - Module assembly
06:37 - Assembled module and specifications
07:23 - Module connection
08:26 - AC DC
10:38 - Connecting the amplifier
11:20 - Testing with music
13:54 - Recommendations and conclusions
14:31 - Thermal imager view
14:43 - Recommendations and conclusions
Thank you for your time.