Grandad's postbag 20240513 Amplifier for solar panel detector
Inspired by this short
@GrantsPassTVRepair - Solar Panel Audio Detector! [ Ссылка ]
I bought today's item on eBay for £2.63
LM386 Single Channel Amplifier Board Convenient for Speaker Electronic DIY Kit
Specification:
Origin: Mainland China
Type: Module
Condition: New
Model Number: Digital Mono Amplifier Module
Product Size: 41.00x14.00x14.00mm/1.61x0.55x0.55inch
Product Description:
1. On board LM386 chip
2. 20 times gain circuit design
3. On-board speaker terminal block
4. On-board 10K adjustable resistor, you can adjust the volume of amplification
5. On-board power indicator
6. The chip's main pins have been cited, you can directly input audio signals
7. Operating voltage: 5~12V
8. GND is negative level, OUN is positive level.
I assembled the kit I used in this video back in 2018 in this video
Grandad assembles a TDA2030A Audio Power Amplifier Board DIY Kit [ Ссылка ]
18W DC 9-24V TDA2030A Electronic Audio Power Amplifier Board DIY Kit
Details from the eBay listing
TDA2030A is widely used as Hi-Fi amplifier manifold in many computer active speakers.
Easy Installation.
It has the function of thermal shutdown, current limiting.
Minimum transmission distortion
Specifications:
Output Power: Maximum 18W
Supply Voltage: DC 9V-24V( recommended DC 12V, this voltage to the heat sink requirements are very low;
Maximum supply of this board is actually up to 40V, but you need to change the board's own electrolytic capacitor C1, the capacitor voltage value is higher than supply voltage can be use. )
Static Current: about 25mA( disconnect to tone, connect to 8O speaker, 12V power supply. )
Speaker Impendance: 4O-8O
Total harmonic distortion: THD 0.08%(Po=0.1 to 14W,RL=4O)
SNR: 94dB-106dB(1W-15W)
Heat: The higher the supply voltage, the great the volume, the higher the heat
Note: This is DIY kit, you need to solder it by yourself!
NEXT VIDEO is here Grandad's Postbag 20240521 Amplifier Kit + Assembly [ Ссылка ]
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