What is an op amp? Operational Amplifier tutorial  super spy microphone circuit

Afroman goes over the basics of how to use an op amp (operational amplifier) to amplify tiny voltages, and builds a circuit to listen to very faint sounds wi.

Spy-MAX Audio PRO VR-U350 - Hidden Spy Microphone 25-Day Standby Battery - Functional Flash Drive - Time/Date... Spy-MAX PRO VR-U350 is the Ultimate Professional USB Flash Drive Voice Activated Recorder https://thehomeofficesupplies.com/spy-max-audio-pro-vr-u350-hidden-spy-microphone-25-day-standby-battery-functional-flash-drive-timedate-stamp-covert-personal-recording-8gb-voice-activated-usb-digital-voice-recorder/

Spy-MAX Audio PRO - Hidden Spy Microphone Standby Battery - Functional Flash Drive - Time/Date Stamp Covert Personal Recording - Voice Activated USB Digital Voice Recorder - My Home Office Supplies

How To Make Spy Microphone!  Super spy microphone made from plastic parabolic dish,old game fun for handle and earbuds with mic and all this work on your smartphone.

How To Make Spy Microphone! Super spy microphone made from plastic parabolic dish,old game fun for handle and earbuds with mic and all this work on your smartphone.

Highly-Sensitive Mini Spy Microphone https://eyesontarget.co.uk/product/mengshen-highly-sensitive-mini-spy-microphone/

Mengshen Highly-Sensitive Mini Spy Microphone Audio Ear Listening Device Sound Amplifier Hearing Wall Gadget Wiretap Device On the Wall /Door With Earphone

Spy Microphone , Parabolic Microphone - Hears sounds at 300 yards

Listen to sounds up to 300 yards away with the pinpoint accuracy of the Detect Ear. The Detect Ear provides high performance with the most advanced audio circuitry and a snap together parabolic dish.

DIY FM Spy Microphone (Spybug)

Diy spybug: In this article i'm gonna show you a step by step how to make your own Fm spy microphone, with schematic, parts list, and a video

Directed Spy Microphone. Very cool website as well. Lots of neat stuff!

Black Friday 2014 Educational Insights Geosafari Sonic Sleuth from Educational Insights Cyber Monday. Black Friday specials on the season most-wanted Christmas gifts.

VideoSecu High Sensitive Preamp Tiny Spy Microphone Audio Pickup Device Kit for Security Camera Sound Voice Monitoring Recording with 50 Feet Cable and Power Supply WE6 by VideoSecu. $25.00. Collect audio evidence as important as capturing video evidence, this preamp microphone kit is a perfect addition to any video security camera system. This high gain mini preamp and microphone is the best for CCTV professionals, with Preamplifier IC built on board, it increas...

VideoSecu High Sensitive Preamp Tiny Spy Microphone Audio Pickup Device Kit for Security Camera Sound Voice Monitoring Recording with 100 Feet Cable and Power Supply WUH -- More info could be found at the image url.

Eavesdrop from a Distance with This DIY Parabolic "Spy" Microphone « Hacks, Mods & Circuitry

How To: Eavesdrop from a Distance with This DIY Parabolic "Spy" Microphone

How to Build a Long Range Laser Spy System for Eavesdropping on Your Neighbors

Spybug - DIY FM Spy Microphone C2 is 10p and not 10n C3 is 15p and not 15n  The battery symbol is up-side-down You don't have any capacitor across the battery. Should be 22n The 4k7 should be 10k to 22k  The circuit has too much inductance and too little capacitance in the tank circuit. The inductance should be 5 or 6 turns and the capacitance should be 47p.

Diy spybug: In this article i'm gonna show you a step by step how to make your own Fm spy microphone, with schematic, parts list, and a video

Squirrel-Baffle Spy Parabolic Microphone | Make:

A simple project that will appeal to all secret agents wannabes or nature enthusiasts out there: a home made FM transmitter parabolic microphone!

Vintage Cold War Era German Minifon Protona SPY Recorder Microphone Disguised as…

Vintage Cold War Era German Minifon Protona SPY Recorder Microphone Disguised as Chronograph Wristwatch

Vintage Cold War Era German Minifon Protona SPY Recorder Microphone Disguised as…

8GB Digital Camera Spy Watch w/ Built-In Microphone

This is why you need this waterproof spy watch. The watch also has a built-in microphone to catch surrounding sounds. Smallest Pin-hole camera made especially for spy use. Waterproof, but it can NOT be used underwater.

Some of the apps are quietly spying on your TV behavior  #GamingApps #Spy #SpyApp #TechNews #Microphones #MobileApp

Some of the apps are quietly spying on your TV behavior

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