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SKU: KIT55
BRAND: Smart Kits
In Stock
R 431.25 (inc VAT)
R 375.00 (ex VAT)
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Uses a suction cup to attach to your telephone handset. Picks up the magnetic field produced in the earpiece by both sides of a telephone conversation. Using op-amps is still a bit of a black art & good layout is essential. Feeds into an 8 ohm speaker after amplification. Volume control trimpot built in. Uses an LM358 & LM386 on a single sided PCB
