Engineering, Technologies, Instrumentation and Automation.
Illuminated Rocker
Small Rocker
Toggle SPDT
Toggle DPDT
Tact Big
Tact Small
DPST 230V AC 10A Neon
DPST 230V AC 5A Neon
SPDT Low Power 1A 50V AC-DC
DPDT Low Power 1A 50V AC-DC
Push NO Data, 0.1A 25V
Push NO Data, 0.05A 12V
DPDT
Dual Pole Dual Throw
DPST
Dual Pole Single Throw.
SPDT
Single Pole Dual Throw.
NC
Normally Closed
NO
Normally Open
A Neon bulb should have a resistor is series to make a [...]
Wenzel Associates Technical Library
Time and Frequency Circuits and Articles including frequency synthesis and conversion.
Crystal Oscillator Tutorial Articles cover oscillator types, terminology, and selection.
Spreadsheets/ Programs to calculate pll response, phase noise under vibration, and others.
Techlib.com Hobby circuits and other information.
World’s Smallest Geiger Counter
Karen’s Electrometer
Selected Reprints (courtesy of RF Design magazine.)
This is an Application note i used to give with my controllers - app009.pdf - Ananth
Temperature Control in Plastic Injection Molding.
Enlarge Image
Terms in Process Control and Explanation.
There are three Controls to be Adjusted to make a Proportional temperature Controller Perform Properly. This method has to be practiced and experience gained from it can [...]
This is part of an user manual i used to give for cooling controllers - app007.pdf
Before you use a Controller to Cool a Chamber to Say +5 Deg C.
First :
Do not Connect the Controller. Directly Connect the Cooling Device e. g. : Compressor. to the system and check the maximum cooling it can produce. [...]