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I am using the word MakerSpace for the same Hackerspace. I would rather call them plain TinkerSpace, where youngsters take apart, fix, build Hardware, Software, Webware, Robots and Machines.

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What are LEDs ? How can we use them for Long Battery Life.

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If LED flashes at 5-10 K Hz at even 50{22ca7e5750adbf65450bc4cf6e82790400f3c203d9ecc808a4bc035087435d3d} Duty Cycle.

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I have made some Web Widgets, these are analog opamp tutors. Interactive Tutorial with Simulated Meters and Potentiometers, demonstrating how Operational Amplifier functions in different configurations.

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Systematic and Meticulous work has its own Rewards. An Engineers Notebook or a Hobby Experiments Log Book can go a long way in making a Cauliflower out of every Cabbage.

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message: Hi, i’m looking at building a power supply 0-35v ,0-100A adjustable cv and cc. I stumbled across your circuit  drive-scr-thyristor-with-555 is there a link to describe what phase logic is required to complete the basic design ?

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Series and Parallel Transformers

Series and Parallel Connections in transformers. Observe the Dot-Polarity. When windings are in parallel the current capacity doubles.

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Product Design

When you wish to Begin to learn Electronics, first a short study of Physics is essential, secondly some Electronics theory.

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Analog is the first thing in electronics. Valve Radios had Amplifiers and RF sections that were analog. Even the first computing methods are analog.

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Here are some Test and measurement notes. These ideas come from practical experience. But the jots are not in any order but are quite important.

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Product Design includes Schematic and Firmware Design. The Mechanical Engineering that goes into making the enclosure and internal construction is also important.

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In Switching Power supplies and RF Circuits, the coils and transformers have many types of cores. Ferrites, Powder Iron, Air and others.

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This Demo shows LM555 running a CD4017 Counter to drive Ten Leds sequentially. Red Button Powers LED Running Lights, 555 Clock is counted by CD4017.

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The Input Impedance of this module is very high and is symmetric. This circuit can be used for strain gauges and for four wire measurements.

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If output impedance of a point is a high value then connecting another circuit at that point will load it, resulting in malfunction or error.

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This is a demo of the popular 555 timer. you can try out the project on this page by a javascript simulation.

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Capacitors ares like reservoirs of charge. In the Water Analogy they are like your Overhead Tank or Sump. It can be like a Lake or Pond, when water is the charge.

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This is the best Instrumentation OpAmp, Great CMRR, ensure supply has no ripple and keep analog and digital grounds separate.

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Description of Gadget – This can be used to preset Five Alarms with a small text memo, The Alarm will remind after set time elapses with musical sounds.

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Here is is gadget GUI for Industrial Process control, WebApps. The buttons make a sound and Light up internal LED lamps.

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In Test and Measurement and Industrial Process Control a common factor is instrumentation. The measuring aspect is common to both.

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