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This book is intended to show the electronics experimenter how the transistor was developed, how it is manufactured, and how it works.

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U1 CD4541 is a Timer with Long Duration Ability. This timer is started by a low pulse from earlier circuit, when the temperature goes above setpoint, a low state is at U2A inputs, this starts the timer.

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This site’s purpose is to address the lack of technical information for some of the rarer vintage computers and related peripherals, with a strong focus on SWTPC.

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I currently have a car stereo set that i use as an amplifier in my living room. but my main problem is that i a lot of noise hum when ever it is on especially when there happens to be a drop in the supply Voltage.

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These Tutors which are Interactive as well are useful for Students and Enthusiasts to enhance the Text Book reading. These pages are good for any person who want to be more familiar with magnetism and electricity.

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delabs technologies is rebuilding dapj tech. Starting from zero, manual addition of pages and posts will take time. Meanwhile use the other sites that are upgraged and online. delabs sections - This Sitemap of all delabs and dapj. Message, Post or Send Email at delabs desk. 

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LED brightness controler, Electronic dice, USB wire switch, JDM PIC programmer, Precise Low Voltage Power Supply, Electrolytic Capacitor Tester.

Elektronika Jaroslav Belza Projects

DIY electronics projects

• Acoustic tester
• Electronic pot
• Rectifier for bar display driver
• Psofometric filter
• 4 Channel Voltmeter Nebraska V4
• Two-colour blinking AC indicator light
• Electronic load

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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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Every electronic gadget primarily needs a D.C, power supply to energize it. It also forms the basic requirement for any constructional project.

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Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles.  – Creator – Simon Field – This Website is a valuable resource for students to learn basics and get interested in electronics and computers.

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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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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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The Prototino is an Arduino clone with a built in prototyping area. Designed to make a permanent version of your project once you have perfected it on a breadboard but without the expense of embedding your original Arduino into your project.

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Steve Hoefer, the main brain behind Grathio Labs. A freelance problem solver and writer. Active in the Open Source software and hardware.

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This is part of a precision High Voltage but Low current Power Supply for Testing leakage currents in passive devices.

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LM399 is a Precision Reference chip. From this a dual polarity mirrored reference is derived using OP07 op-amps. This assembly is mounted in a miniature oven to ensure temperature stability.

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A long, long time ago a bright ape figured out that by climbing down from the trees he could more easily master his life, and that of others……Homo sapiens wanted something else, and better.

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A single Voltmeter or Digital Panel Meter DPM can monitor 8 Analog inputs from sensors or potentiometers using a Mux chip and creating simple digital controls for that.

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This is a continuation of the previous two circuits. This circuit controls the temperature in a miniature oven that holds a stable dual voltage reference.

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