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WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov Click to see Why is this here?
As of August 2018 the State of California has changed the requirements of the Prop 65 law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.
As an example: ABS plastic contains styrene PVC wire insulation can contain Di(2-ethylhexyl)phthalate (DEHP) electrolytic capacitors can contain Ethylene glycol Brass can contain Lead flame retardant pc boards can contain Tetrabromobisphenol A (TBBPA) Aluminum alloys can contain Chromium To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching! |
Product Reviews Click here to review this item | ||
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Amp used for underground water leak finder | |
| I used this to build a water pipe leak finder. I used a 9volt battery and an external microphone on the input. A 10K pullup resistor and a .1ufd coupling capacitor was required on the input . Used compressor to apply 25lbs air to the pipe and listened for air bubbles. | ||
| - Troy R, CA | ||
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Useful compact amplifier, though with a slight stability problem | |
| I tested two boards, and found that if the amplifier is powered from 11V or more, with the input grounded, and with the pot set near center, there will be a slight oscillation. This is due to sensitive feedback components C1 and R1 being routed in a large loop around the noisy output snubber C4 and R2. It is also likely the reason why they used 100 ohms for snubber R2, instead of 10 ohms recommended by the LM386 datasheet. I fixed this by lifting IC pins 1 and 8 off the board, gluing a 10uF X7R on top of the IC, and then wiring it to pins 1 and 8. H.Bustani, NV | ||
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Pipe and cable locator amp | |
| I am using this module to replace one that I was building myself including the pcb board using an LM386 IC. This module works better than the one I was using before and greatly reduced my manufacturing cost. Great product. | ||
| - Dave Freeman, LA | ||
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amplifies sound | |
| This module does a great job at amplifying all sounds | ||
