This is a Low cost controller, Analog Dial Temperature Controller. It is also called Blind Controller. This essentially means Open Loop, just control the fuel or energy input to the system to regulate heat. This is not a Blind Controller that way, it only cannot display the temperature value, that could be another reason it [...]
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Just like Rohde and Schwarz which is a world leader in Communications Test Equipment, There was another from Germany called Wandel and Goltermann which made specialized RF Test Instruments. A short history is Wandel and Goltermann became Wavetek Wandel Goltermann (WWG) and then Acterna, Now it is a part of JDSU Communications Test & Measurement. See also [...] Description - If wires of two dissimilar metals are joined at both the ends and the junction formed at one of the ends, is heated more than the other junction, a current flows in the circuit due to Seebeck thermal emf. This effect is used in thermocouple temperature sensors. The Peltier effect is the converse of [...] Here is the catalog i made many years back to promote the DC Power supply i manufactured. See – DC Regulated Power-Supply Front Side From dapj Diagrams Back Side From dapj Diagrams Let us assume Physics, Chemistry and Biology as Verticals on a Horizontal plane called Science. A part of Physics developed into Magnetism and Electricity, which further evolved into Electrical Engineering a Technology. When a branch of Science is applied to develop, evolve and maintain Life on this Planet it becomes a Technology. Electrical Engineering as a [...] The Basic Tutorials Section has been updated, “Basics” in an Instrumentation Viewpoint. Some Learning i had written down, Later made a Newsletter Amps-n-Volts. Now i am organizing everything into one area. More like Content Management by chewing the cud. Basics of Electronics This circuit is used to detect objects by reflected infrared light. It can be built into a cylindrical enclosure just like an inductive proximity switch. This is also useful as a level detector for colored liquids like oil. This has some immunity to ambient sunlight as it detects ac pulses. InfraRed Detector for Proximity Switch |
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