Wide-band doubler and sine wave quadrature generator

Phase-locked loop with photoresistive control, which provides both sine and cosine outputs for subcarrier demodulation, serves as a telemetry demodulator signal conditioner with a second harmonic signal for synchronization with the locally generated code

Design and testing of an aerospace dew point hygrometer Final report

Thermoelectrically cooled miniature dew point hygrometer system for spacecraft instrumentation system

Design and testing of an aerospace dew point hygrometer final report

Small sensor hygrometer for measuring dew point in manned spacecraf

Pencitraan 2d Dan 3d Optical Beam Induced Voltage Menggunakan Sensor Fotoresistor

Study of 2D and 3D Optical Beam Induced Voltage Imaging Using Photoresistor Sensor. This article shows amethod to study OBIV (optical beam induced voltage) imagerie system, that usually employ a laser scanningmicroscopy system. The OBIV imagerie system developed use a photoresistor sensor as a sample and simultaneously itcan be used for analyzing its inhomogeneity response. Resolution of the system is still low, about 350μm due to highvalue of incident light diameter. The results inform that photoresistor sensors gave an optimum response if the incidentlight hits the center of sensible zone

Automatic frequency control of voltage-controlled oscillators

Optical-capacitive coupling is used for isolation of control voltages, such as the high-voltage level of a klystron control electrode that is not referenced to ground, to serve as error voltages referenced to system ground so that the magnitude and sense of correction may be transferred

A venting alarm system for cryogenic liquids

Alarm system for cryogenic fluid storage tank

Lunar station television camera

Panoramic television cameras aboard Lunik lunar probe

Candyland 2.0

My project idea will be a revised Candyland game. It will include photoresistors and MATLAB code

Perekaman Data Sensor Ke Google Sheets Menggunakan Sistem Mikropengendali Atmega16a Dan Aplikasi Server

There are various occasions where data taken from field measurements need to be stored remotely, but yet accessible from many places and by any means. The emergence of online data storage for documents such as Google Docs had made it possible to build a system that acquires data from sensors and stores them as an online document accessible anywhere. The purpose of this research is to develop a system prototype to store and display data from the result of measurements toGoogle Sheets through the use of ATmega16A microcontroller system and a server application. The proposed system consists of a data acquisition unit, a PC that acts as a server and web services. The data acquisition unit is made up from an ATmega16A microcontroller, LM35 astemperature sensor, photoresistor for light intensity measurement and FT232RL module for serial communication. Application server that runs on a PC is written in Processing programming language.The web services being used are Temboo and Google Sheets. From the test results it can be concluded that data acquisition unit had been able to transmit data to PC via serial communication, the server application was successfully built in terms of interface design and functionalities and a table in Google Sheets had been capable to store measurement results and display them correctly. In order to deliver a sense of real-time measurement, it is advisable to add a real-time clock chip module to microcontroller system such that the momentthe data arrive from sensors is recorded. The server application can be improved by the addition of local data logging feature to anticipate the loss of data caused by disturbances during onlinetransmission

Two approaches to a portable color-measuring system

Descriptions of portable spectrophotometer and reflectometer for color measuremen