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Hour Meter triggered by Machine Vibration - This hobby circuit allows an off-the-shelf battery powered digital hour meter to be turned on and off, according to a machine's operation, without requiring a direct electrical connection to the machine . . . Hobby Circuit designed by David Johnson P.E.-January, 1998
Machine Vibration Activates Hour Meter - 01/16/97 EDN Design Ideas: Battery-powered digital hour meters commonly monitor how long a machine is in operation by detecting when the machine is supplied with power. However, it is often difficult or dangerous to connect a battery-powered hour meter to a line-powered machine. When the machine being monitored Design by David Johnson, P.E. - www/discovercircuits/com
Machine Vibration Triggers Hour Meter - This circuit allows an off-the-shelf battery powered digital hour meter to be turned on and off, according to a machine's operation, without requiring a direct electrical connection to the machine. Machine vibrations are detected by an off-the-shelf piezo. . . Circuit by David Johnson P.E.-January, 1998
Motion Alarm using piezo Device - An inexpensive piezoelectric device is used as a motion sensing device for this motion alarm. . . Circuit by Dave Johnson P.E.-July, 2006
Piezoelectric Device used for Motion Alarm - An inexpensive piezo wafer is used to detect vibration and when the vibration is sufficient a switch is activated . . . Hobby Circuit designed by David Johnson P.E.-July, 2006
Piezoelectric Vibration Sensor Activates Switch - An inexpensive piezo device is used as a motion sensing device for this motion alarm. . . Circuit by Dave Johnson P.E.-July, 2006
Seismometer & structural vibration meter - 05/14/14 EDN Design Ideas: Use a TI LDC1000 as a sub-micron displacement sensor for vibration measurement and logging in seismic and structural mechanics applications. Design by Dmitrii Loukianov
Sensitive Vibration Detector - This vibration detector is realised using readily available, low cost components. One of its many applications is in a rolling shutter guard for offices and shops. The detector will sense vibration...__ Electronics Projects for You
Shock Sensor Amplifier (Accelerometer) - A shock sensor is a capacitive piezoelectric element which generates a charge under physical acceleration. This charge can be converted to a voltage and filtered using high valued resistors and a high input impedance CMOS
amplifier such as the LTC6081. This circuit has a gain of 100 and output 109mV per g of acceleration__ Linear Technology/Analog Devices App Note, Mar 16, 2010
Shock-Sensor Prevents Data Corruption - 07/04/96 EDN Design Ideas: Hard-disk drives for laptop and other portable applications need to withstand significant g-force shocks when operating. A typical 1.8-in. drive writes servo information over less than 15% of the disk's active area, which means that the read/write head spends more than 85% Design by Carolyn Platt, Raltron Electronics Corp, Miami, FL
Single Supply Shock/Vibration Sensor Amplifier - The LTC6087/LTC6088 are dual/quad, low noise, low offset, rail-to-rail input/output, unity-gain stable CMOS
operational amplifiers that feature 1pA of input bias current. A 14MHz gain bandwidth and 7.2V/μs slew rate, combined with low noise (10nV/√Hz) and a low 0.75mV offset, make the LTC6087/LTC6088 useful in a variety __ Linear Technology/Analog Devices App Note, Jul 25th 2012
Smart Vibration Sensor - in this vibration sensor alarm circuit, initially, when power switch S1 is flipped to 'on' position, power indicator LED1 lights up immediately. IC LM555 (IC 1) , wired as a simple latch circuit...__ Electronics Projects for You
Switch activated by Piezo Vibration - An inexpensive piezo wafer is used to detect vibration and when the vibration is sufficient a switch is activated . . . Hobby Circuit designed by David Johnson P.E.-July, 2006
Thermowell vibration Monitor - 04/14/14 - EDN Design Ideas: Use Ti's unique inductance - to - digital converter to sense potentially dangerous vibration in thermowell sensors Design by Robert Heider
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