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Reflectometer applications: methods for finding significant cable damage

Reflectometer applications: methods for finding significant cable damage

Consider the primary functions of reflectometers, such as automatic detection, searching for crossed pairs, and identifying 'floating' defects.

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DIY single transistor reflex AM radio with regeneration and AGC

DIY single transistor reflex AM radio with regeneration and AGC

To make a good AM radio, one transistor is enough. It can amplify both radio frequency and audio signal. It is called a reflex circuit, and it shows excellent results.

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Review, teardown, and testing of LRS-150-24 Mean Well power supply

Review, teardown, and testing of LRS-150-24 Mean Well power supply

We teardown and tested in different modes LRS-150-24 power supply from Mean Well. It's a 150W single-output enclosed-type power supply with a 1 3/16" low-profile design. Adopting the input of 115VAC, the power supply provides an output voltage line of 24V DC.

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Pi Extension board "PiEBridge"

Pi Extension board "PiEBridge"

"PiEBridge" is an extension board for microcomputers similar to the Raspberry Pi (Pi), which is designed to be a helper for the DIY-maker in all his activities...

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Reflectometers' characteristics: additional capabilities

Reflectometers' characteristics: additional capabilities

Critical options for reflectometers: Why is this important, and how do you use it?

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Regency TR-1 superheterodyne transistor radio

Regency TR-1 superheterodyne transistor radio

It was the very first all-transistor commercial radio in the United States and in the world. How much have circuits and enclosure designs changed in 69 years?

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When is the best case for HDMI over IP extenders?

When is the best case for HDMI over IP extenders?

Why use HDMI over IP in some cases? The image quality is noticeably worse than a classic HDMI twisted-pair extender. Let's see a few examples and answer this together.

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Reflectometers for metal cables: noise filtering, propagation coefficient, and its determination methods

Reflectometers for metal cables: noise filtering, propagation coefficient, and its determination methods

The noise filtering function - how to use it, when it helps and when it interferes with measurements. An important parameter is the velocity of propagation (VoP) - how it affects the measurement accuracy and how it can be determined experimentally if its value is unknown.

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Simple DIY tube guitar amplifier

Simple DIY tube guitar amplifier

What is tube sound? How is it different from the transistor one?How do long radio tubes differ from short ones? Today we will build a small tube amplifier powered by 12 volts AC. And with its help, we will hear the answers to these questions and see them on the oscilloscope screen.

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PCB Assembly Desktop Factory project. Our team

PCB Assembly Desktop Factory project. Our team

We have many years of experience in developing electronic devices for various customers. When we complete a non-standard task, we often explore new methods and ways to achieve the required result. By accumulating this knowledge, we create solutions to simplify the design and creation of devices. It's time to share some of our solutions with the community now.

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DIY functional oscillators

DIY functional oscillators

On the oscilloscope screen you can see signal distortions and use them to determine the health of the circuit. But where do you get the reference signal? - A signal generator will help!

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Reflectometer's characteristics: sensitivity, accuracy, resolution, working distance

Reflectometer's characteristics: sensitivity, accuracy, resolution, working distance

How to compare OTDRs from different manufacturers? What is more critical: resolution capability or sensitivity? How to determine the actual range of a device?

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PCB Assembly Desktop Factory project. History and creation reasons.

PCB Assembly Desktop Factory project. History and creation reasons.

We have many years of experience in developing electronic devices for various customers. When we complete a non-standard task, we often explore new methods and ways to achieve the required result. By accumulating this knowledge, we create solutions to simplify the design and creation of devices. It's time to share some of our solutions with the community now. This is my team's first public project.

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INRIKS EX4076KVM 4K HDMI KVM twisted-pair extender review.

INRIKS EX4076KVM 4K HDMI KVM twisted-pair extender review.

Earlier, we'd looked into the case of controlling one DVR from two remote rooms. The 4K HDMI KVM twisted-pair extender INRIKS EX4076KVM was the best device for the job. We decided to make a more detailed review of it and test it properly.

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The Colpitts oscillator experiment and DIY FM transmitter

The Colpitts oscillator experiment and DIY FM transmitter

How do electronic oscillators work? Who invented them, and when? And how can we apply them? We will talk about all this today.

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Reflectometers: Key Pulse Parameters

Reflectometers: Key Pulse Parameters

What determines the accuracy and range of defect detection? What is better: short/long or single/multi-pulses? Case: one reflectometer, but different types of cables.

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The new life for your old AM radio (DIY micro power AM MW transmitter AMT-MW207)

The new life for your old AM radio (DIY micro power AM MW transmitter AMT-MW207)

Today we will assemble a small medium wave radio transmitter with which you can check and configure AM radio receivers, as well as listen to music through them if you connect an MP3 player or smartphone to it.

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How does one control a single DVR from two remote rooms?

How does one control a single DVR from two remote rooms?

What if you need to connect two different remote workstations for CCTV operators so that every one of them can see the image from the DVR and control it? Let's try to solve this problem in practice using HDMI KVM extenders over twisted pair and see if it works out.

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The undeservedly forgotten Classic Tube Оverdrive DOD FX-53 guitar pedal DIY

The undeservedly forgotten Classic Tube Оverdrive DOD FX-53 guitar pedal DIY

My first impression was that I had finally assembled the best overdrive in my entire life. For the first time, a cheap Squier Bullet Mustang electric guitar with stock humbuckers sounded equally good with all the cabinets I usually simulate and switch between when testing a new pedal.

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Time Domain Reflectometer - TDR for Metal Cable: Operating principles

Time Domain Reflectometer - TDR for Metal Cable: Operating principles

The reflectometer measures the reflection of a signal. This method for cable damage detection complements all the others we've previously discussed and, in some cases, gives more accurate results, especially when locating wire entanglements or breaks and looking for non-persistent faults. Furthermore, it allows one to clearly identify several individual problems when they interfere with each other, as well as determine the range of each one of them.

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