Audio Memo Alert Circuit


Posted on Feb 7, 2014

This device prevents paper notes and memos from being overlooked. A paper note placed between two fingers made of a conducting material (metal or conductive plastic) breaks the circuit, allowing pair 1 of Ul-a to go high. We aim to transmit more information by carrying articles. Please send us an E-mail to wanghuali@hqew. net within 15 days if we a


Audio Memo Alert Circuit
Click here to download the full size of the above Circuit.

re involved in the problems of article content, copyright or other problems. We will delete it soon.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Electric-vehicle-battery-saver
Temperature-compensated-crystal-oscillator
Field-programmable Operational Transresistance Amplifier using Floating-gate MOSFETs
High-voltage power pulse circuit
dm projects
Sound Synchronized LED Video Tutorial
Simple Short-Circuit Detection
Simple voltage to frequency converter
Current negative feedback electronic frequency power amplifier circuit
30W amplifier circuit
Darlington phototransistor type light-triggered circuit diagram of a switching application



Top