Відео

Model: VM 560A Year made: 1957 VM (Voice of Music) Tube record player. The electronic is still very good, producing supper good sound quality. I wasn't able to fix the mechanism, or actually I broke it. The dried oil caused stuck between the bearing and the main spinning table shaft. It was like welded and I wasn't able to separate them. I finally broke the shaft. I think if I could heat up the...

Restore the work someone did very long time ago

A low cost simple MP3 player can perform several features. The circuit includes: 1. MP3 chip TD5580A 2. Audio amplifier 8002A 3. Micro SD connector 4. UART 5. USB 6. Speaker output

Máy tuy đơn giản nhưng có nhiều chức năng không ngờ. Nếu bạn có câu hỏi thì hãy viết phần comment bên dưới. Mạch MP3 gồm IC điều khiển MP3: TD5580A IC khuếch đại âm: 8002A Ổ cắm Micro SD USB host/Device Serial port Chương trình điều khiển theo các bước sau 1. Mở cổng serial 9600 2. Chọn Micro SD card 3. Chỉnh volume ở mức 20 4. Hát bản thứ nhất trong thẻ nhớ Micro SD 5. Lập lại bước 4 mỗi 10 giây

Brand: Grundig. Made in Germany 1968. Four bands: FM, AM, SW1, SW2 Solid State: FM 12 circuits, AM 7 circuits AC 115V, 60Hz, 24W max Symptom: AM band worked intermittent. Problem: Band select switches got their contacts oxidized, no good for electrical conductivity. Solve: Disassembled the switches, immersed them in vinegar for an hour then scrubbed with a metal brush to move black stuffs, then...

This is from Apex Expo IPC 2024 Anaheim Convention Center, Orange County, California April 9, 2024

Solar Eclipse observed from San Diego, California on April 8, 2024, around 10:30 AM.

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Code for Arduino C code: www.hackster.io/txnghia/30-songs-music-box-with-arduino-edf50f This music box can play 30 songs 1. Candy Man 2. Impossible Dream 3. Peter Cotton Tail 4. Little Drummer Boy 5. Always in a Manger 6. When you wish up a Star 7. Puff the Magic Drag 8. Raindrops, 9. Tomorrow 10. Camelot 11. Frosty the Snowman 12. Easter Parade 13. Love Story 14. Memory 15. You Light Up My Lif...

Radio: Wendell-West 8 transistor AM radio, model: CR-18, 1965, Japan. De-solder all the components. Compare measured values and nominal values. List the different percentage.

Sửa radio Realtone 11 băng tần: . LW - Long Wave: Sóng dài . AM - Amplitude modulation (or MW - Midium Wave) . SW - Short Wave: Sóng ngắn . FM - Frequency modulation . Tìm ra 3 tụ điện bị hư 1. Tụ hư nối giữa phần tiền khuếch đại âm thanh thứ nhất và phầ tiền khuếch đại thứ hai 2. Tụ hư nối phần tách sóng của băng tần FM với đầu vào của mạch khuếch đại âm 3. Tụ hư nối phần tách sóng của băng tầ...

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