A simple Electronic Microcalorimeter
#microcalorimeter
#temperature measurement
#sensor
#electronic measurement
#precision
#thermal analysis
#calorimetry
#lab equipment
#scientific instrumentation
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Sensor-Activated Relay Pulser Circuit
A sensor activates transistor Q1 to turn on the low-frequency 555 oscillator, which generates pulses to control LAMP II. The sensor may respond to variations in light or temperature. Either resistor RA or RB can function as the sensor, depending...
DIY Digital Thermometer
This DIY digital thermometer circuit can measure temperatures up to 150 °C with an accuracy of ±1 °C. The temperature is displayed on a 1V full-scale deflection (FSD) moving-coil voltmeter or digital voltmeter. An operational amplifier IC 741 (IC3) provides...
Precision-threshold-detector
This circuit requires low noise, stable offset voltages, high open-loop gain, and high speed. These requirements are fulfilled by the HA5147. Standard variations of this circuit can be easily implemented using the HA-5147. For instance, hysteresis can be introduced by...
Field disturbance sensor-alarm
The change in ambient light triggers the alarm by changing the resistance of LDR1 and LDR2.
The circuit utilizes two light-dependent resistors (LDR1 and LDR2) to detect variations in ambient light levels. LDRs are passive components that exhibit a change in...
Add a sensor to a board and measure something with it
This week's plan is to build a device that warns of the potential for a knockdown, which is the process by which an over-canvassed ship is laid over on her beam-ends. The risk of sinking is high during this event,...
Adjustment-free precision summing amplifier
This circuit generates continuous outputs that depend on multiple input variables.
The circuit in question typically employs a combination of operational amplifiers (op-amps), resistors, and potentiometers to achieve its functionality. The outputs can be tailored based on the variations in...
Precision Oscillator With 20ns Switching
A precision oscillator can be constructed using a quartz crystal; however, with appropriate component selection, it is also possible to build one using an RC (resistor and capacitor) circuit.
An RC oscillator generates an oscillating signal through the use of resistors...
OP113 wide range of precision temperature measurement circuit
The circuit includes a K-type thermocouple cold junction compensation circuit, a precision 5.000V reference voltage source, and an OP113 operational amplifier. It is capable of measuring temperatures ranging from 0°C to 100°C with a resolution of 0.02°C. The OP113 is...
Scoobas Solution Sensing Tactic
This document serves multiple purposes, primarily to document the methods employed by a Scooba robot to detect: a) the presence of an acceptable cleaning solution being delivered to its pump, and b) the excess presence of used solution collected off...