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Successful launch paper USAF Rocket D-Lab electronics Launch Control Reports Halloween special C-57D

Test launch of a capacitor powered paper rocket. The launch control facility (LCF) is controlled by an Allen Bradley PLC. 1st attempt failed. Unfortunately the rocket was not able to leave the launch pad. After some advice from fellow YT’ers, I was able to redesign the launch pad, removing the booster from the rocket and incorporating it onto the launch pad. This reduced payload and allowed for a flawless launch! Some of you did not see the value/fun of this experiment. Sorry, but it was fun and educational for me. Thank you to all that have an open mind. Would you like to see another test launch? Happy Halloween from D-Lab!

Amazon Video

Successful launch paper USAF Rocket D-Lab electronics Launch Control Reports Halloween special C-57D

Test launch of a capacitor powered paper rocket. The launch control facility (LCF) is controlled by an Allen Bradley PLC. 1st attempt failed. Unfortunately the rocket was not able to leave the launch pad. After some advice from fellow YT’ers, I was able to redesign the launch pad, removing the booster from the rocket and incorporating it onto the launch pad. This reduced payload and allowed for a flawless launch! Some of you did not see the value/fun of this experiment. Sorry, but it was fun and educational for me. Thank you to all that have an open mind. Would you like to see another test launch? Happy Halloween from D-Lab!

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Tour D-Lab Electronics Plans expand grow the operation underway New benches room Goal for the future

My Goal, broaden my store operation. Make the device extra efficient. Presently I battle with way too much clutter, lack of company. For this store to be successful, modifications have to be made. I am in process of commandeering out living room and change it right into component of the store. That will add a 24X24 foot area, tripling my existing area. I would love to have if completely practical by years end. To sustain this initiative, I have set up a Patreon account. https://www.patreon.com/dlab_electronics?fan_landing=true
There is likewise details concerning my shop on d-labelectronics. com.
Thanks for your support. Its mosting likely to be an enjoyable trip. TD.

Amazon Video

Tour D-Lab Electronics Plans expand grow the operation underway New benches room Goal for the future

My Goal, expand my shop operation. Make the machine more efficient. Currently I struggle with too much clutter, lack of organization. For this shop to succeed, changes must be made. I am in process of commandeering out family room and transform it into part of the shop. That will add a 24X24 foot area, tripling my current space. I would like to have if fully functional by years end. To fuel this effort, I have set up a Patreon account. https://www.patreon.com/dlab_electronics?fan_landing=true
There is also information about my shop on d-labelectronics.com
Thanks for your support. Its going to be a fun journey. TD

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Cruise missile disables electronics using microwaves

Engineers and designers from Boeing, Raytheon, and the Air Force Research Laboratory observed the test flight of a new type of cruise missile designed to disable electronic devices on October 16. The Boeing CHAMP, which stands for Counter-electronics High-powered Microwave Advanced Missile Project, is a cruise missile that uses high powered microwaves to render electronics inoperable. The CHAMP missile aims a precise beam of high-powered microwaves at one or multiple targets as it flies. It can disable lights, computers and electrical systems in a building. It’s also capable of affecting an enemy’s defences by shutting down radar, tracking, and data systems. SOURCE: Gizmag, AOL, Boeing

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Electronics: Introduction to LC Oscillators circa 1974 US Air Force Training Film

Support this channel: https://www.patreon.com/jeffquitney

more at: http://scitech.quickfound.net

“In an LC oscillator circuit, the filter is a tuned circuit consisting of an inductor (L) and capacitor (C) connected together.”

US Air Force Training Film TVK 30-536

Electronics playlist: https://www.youtube.com/playlist?list=PLAA9B0175C3E15B47

Originally a public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

https://en.wikipedia.org/wiki/Electronic_oscillator
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal, often a sine wave or a square wave. Oscillators convert direct current (DC) from a power supply to an alternating current signal. They are widely used in many electronic devices. Common examples of signals generated by oscillators include signals broadcast by radio and television transmitters, clock signals that regulate computers and quartz clocks, and the sounds produced by electronic beepers and video games.

Oscillators are often characterized by the frequency of their output signal:

A low-frequency oscillator (LFO) is an electronic oscillator that generates a frequency below ≈20 Hz. This term is typically used in the field of audio synthesizers, to distinguish it from an audio frequency oscillator.
An audio oscillator produces frequencies in the audio range, about 16 Hz to 20 kHz.
An RF oscillator produces signals in the radio frequency (RF) range of about 100 kHz to 100 GHz.

Oscillators designed to produce a high-power AC output from a DC supply are usually called inverters.

There are two main types of electronic oscillator: the linear or harmonic oscillator and the nonlinear or relaxation oscillator…

Harmonic oscillator

The harmonic, or linear, oscillator produces a sinusoidal output. There are two types:

Feedback oscillator

The most common form of linear oscillator is an electronic amplifier such as a transistor or op amp connected in a feedback loop with its output fed back into its input through a frequency selective electronic filter to provide positive feedback. When the power supply to the amplifier is first switched on, electronic noise in the circuit provides a signal to get oscillations started. The noise travels around the loop and is amplified and filtered until very quickly it becomes a sine wave at a single frequency.

Feedback oscillator circuits can be classified according to the type of frequency selective filter they use in the feedback loop:

In an RC oscillator circuit, the filter is a network of resistors and capacitors. RC oscillators are mostly used to generate lower frequencies, for example in the audio range. Common types of RC oscillator circuits are the phase shift oscillator and the Wien bridge oscillator.

In an LC oscillator circuit, the filter is a tuned circuit (often called a tank circuit; the tuned circuit is a resonator) consisting of an inductor (L) and capacitor (C) connected together. Charge flows back and forth between the capacitor’s plates through the inductor, so the tuned circuit can store electrical energy oscillating at its resonant frequency. There are small losses in the tank circuit, but the amplifier compensates for those losses and supplies the power for the output signal. LC oscillators are often used at radio frequencies, when a tunable frequency source is necessary, such as in signal generators, tunable radio transmitters and the local oscillators in radio receivers. Typical LC oscillator circuits are the Hartley, Colpitts and Clapp circuits.

In a crystal oscillator circuit the filter is a piezoelectric crystal (commonly a quartz crystal). The crystal mechanically vibrates as a resonator, and its frequency of vibration determines the oscillation frequency. Crystals have very high Q-factor and also better temperature stability than tuned circuits, so crystal oscillators have much better frequency stability than LC or RC oscillators. Crystal oscillators are the most common type of linear oscillator, used to stabilize the frequency of most radio transmitters, and to generate the clock signal in computers and quartz clocks. Crystal oscillators often use the same circuits as LC oscillators, with the crystal replacing the tuned circuit; the Pierce oscillator circuit is also commonly used. Quartz crystals are generally limited to frequencies of 30 MHz or below. Other types of resonator, dielectric resonators and surface acoustic wave (SAW) devices, are used to control higher frequency oscillators, up into the microwave range…

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Characteristics of Crystals 1964 US Air Force Electronics Training Film

more at: http://scitech.quickfound.net

“STRESSES THE IMPORTANCE OF FREQUENCY STABILITY AND INTRODUCES THE CRYSTAL CONTROLLED OSCILLATOR AS A POSSIBLE DEVICE USED TO OBTAIN THIS STABILITY. EXPLAINS THE PIEZOELECTRIC EFFECT OF A CRYSTAL, LISTS TYPES OF CRYSTALS HAVING THE PIEZOELECTRIC EFFECT, AND POINTS OUT THE RELATIONSHIP BETWEEN CRYSTAL THICKNESS AND FREQUENCY. VARIOUS CRYSTAL CUTS ARE EXPLAINED AND SHOWN GRAPHICALLY. THE Q OF THE CRYSTAL CIRCUIT IS EXPLAINED, AND BOTH THE PHYSICAL DIMENSIONS AND ELECTRICAL CHARACTERISTICS OF A TYPICAL CRYSTAL ARE DISCUSSED.”

US Air Force Training Film TV-513

Electronics playlist: https://www.youtube.com/playlist?list=PLAA9B0175C3E15B47

Public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

http://creativecommons.org/licenses/by-sa/3.0/
https://en.wikipedia.org/wiki/Crystal_oscillator

A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency. This frequency is commonly used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers. The most common type of piezoelectric resonator used is the quartz crystal, so oscillator circuits incorporating them became known as crystal oscillators, but other piezoelectric materials including polycrystalline ceramics are used in similar circuits.

Quartz crystals are manufactured for frequencies from a few tens of kilohertz to hundreds of megahertz. More than two billion crystals are manufactured annually. Most are used for consumer devices such as wristwatches, clocks, radios, computers, and cellphones. Quartz crystals are also found inside test and measurement equipment, such as counters, signal generators, and oscilloscopes…

Piezoelectricity was discovered by Jacques and Pierre Curie in 1880. Paul Langevin first investigated quartz resonators for use in sonar during World War I. The first crystal-controlled oscillator, using a crystal of Rochelle salt, was built in 1917 and patented in 1918 by Alexander M. Nicholson at Bell Telephone Laboratories, although his priority was disputed by Walter Guyton Cady. Cady built the first quartz crystal oscillator in 1921. Other early innovators in quartz crystal oscillators include G. W. Pierce and Louis Essen…

Quartz crystal oscillators were developed for high-stability frequency references during the 1920s and 1930s. Prior to crystals, radio stations controlled their frequency with tuned circuits, which could easily drift off frequency by 3-4 kHz. Since broadcast stations were assigned frequencies only 10 kHz apart, interference between adjacent stations due to frequency drift was a common problem. In 1925 Westinghouse installed a crystal oscillator in its flagship station KDKA, and by 1926 quartz crystals were used to control the frequency of many broadcasting stations and were popular with amateur radio operators. In 1928, Warren Marrison of Bell Telephone Laboratories developed the first quartz crystal clock. With accuracies of up to 1 sec in 30 years (30 ms/year or 10−7), quartz clocks replaced precision pendulum clocks as the world’s most accurate timekeepers until atomic clocks were developed in the 1950s. Utilizing the early work at Bell Labs, AT&T eventually established their Frequency Control Products division, later spun off and known today as Vectron International.

A number of firms started producing quartz crystals for electronic use during this time. Using what are now considered primitive methods, about 100,000 crystal units were produced in the United States during 1939. Through World War II crystals were made from natural quartz crystal, virtually all from Brazil. Shortages of crystals during the war caused by the demand for accurate frequency control of military and naval radios and radars spurred postwar research into culturing synthetic quartz, and by 1950 a hydrothermal process for growing quartz crystals on a commercial scale was developed at Bell Laboratories. By the 1970s virtually all crystals used in electronics were synthetic.

In 1968, Juergen Staudte invented a photolithographic process for manufacturing quartz crystal oscillators while working at North American Aviation (now Rockwell) that allowed them to be made small enough for portable products like watches.

Although crystal oscillators still most commonly use quartz crystals, devices using other materials are becoming more common, such as ceramic resonators…