In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal. The circuit is named a trigger because the output retains its value until the input changes sufficiently to trigger a change. In the non-inverting configuration, when the input is higher than a chosen threshold, the output is high. When the input is below a different (lower) chosen threshold the output is low, and when the input is between the two levels the output retains its value. This dual threshold action is called hysteresis and implies that the Schmitt trigger possesses memory and can act as a bistable multivibrator (latch or flip-flop). There is a close relation between the two kinds of circuits: a Schmitt trigger can be converted into a latch and a latch can be converted into a Schmitt trigger. Schmitt trigger devices are typically used in signal conditioning applications to remove noise from signals used in digital circuits, particularly mechanical contact bounce in switches. They are also used in closed loop negative feedback configurations to implement relaxation oscillators, used in function generators and switching power supplies. (Wikipedia).
Tranter 1853 double-trigger revolver
William Tranter was one of Robert Adams' most important frame suppliers. Tranter also patented and manufactured double-action revolvers based on the Adams frame. The 1853 model had a double trigger. Pressure on the longer trigger cocked the gun and rotated the chamber, while pressing o
From playlist Handguns, Rifles and me
Spring toggle mechanism enables to reach end positions of a lever quickly and holds it there firmly. The pink double crank represents action from outside.
From playlist Mechanisms
This mechanism directly converts the continuous rotary motion of a drive shaft into the intermittent linear motion of a rack. STEP files of this video: http://www.mediafire.com/file/1c0iaa3teed88el/RatchetMechanism6STEP.zip Inventor files: http://www.mediafire.com/file/ujcw5wcp8nabb65/Ratc
From playlist Mechanisms
Tranter 1858 model 4 double action revolver
William Tranter was an important supplier of English revolver frames during the period 1853-1866. He patented a number of improvements that allowed a revolver to be fired either by pulling the trigger, which cocked the gun, rotated the cylinder and then fired it in one continuous action.
From playlist Handguns, Rifles and me
The Borchardt C93 was probably the first commercially successful semi-automatic pistol. It was designed in Germany by Hugo Borchardt in 1893, and fired a 7.65mm cartridge, also designed by Borchardt. The gun uses a toggle-lock system to lock the breech. When the gun is fired the recoili
From playlist Handguns, Rifles and me
EEVblog #941 - Schmitt Trigger Tutorial
Fundamentals Friday What is a Schmitt trigger and how does it work? What is hysteresis? And how do they fix two common problems in electronics, namely slow slew rate signals on CMOS digital chip inputs causing oscillation, and noise on comparator inputs. The issues are demonstrated first o
From playlist Fundamentals Friday
16. Describing Functions (continued)
MIT Electronic Feedback Systems (1985) View the complete course: http://ocw.mit.edu/RES6-010S13 Instructor: James K. Roberge License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT Electronic Feedback Systems (1985)
Dealing with Schrodinger's Equation - The Hamiltonian
https://www.patreon.com/edmundsj If you want to see more of these videos, or would like to say thanks for this one, the best way you can do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible. Schrodinger's
From playlist Quantum Mechanics
Spring toggle mechanism enables to reach end positions of a lever quickly and holds it there firmly. The violet double crank represents manual action. Inventor files of this video: http://www.mediafire.com/file/dd93u5496lazlc0/SpringToggle3Inv.zip
From playlist Mechanisms
Tutorial 10 for Arduino: Interrupts and Hardware Debouncing
New Episodes each Monday! You can download the parts list, code, and schematics from this episode on my website: http://jeremyblum.com/2011/03/07/arduino-tutorial-10-interrupts-and-hardware-debouncing Learn more about Timer Interrupts here: http://jeremyblum.com/2010/09/05/driving-5
From playlist Tutorial Series for Arduino
EEVblog #267 - Voltage Detection Stick Teardown
http://www.idealindustries.com/prodDetail.do?prodId=61-025 http://www.google.com/patents/US5103165 It's Teardown Tuesday time. Ever wondered what's inside those mains voltage detection sticks? Dave cracks open an IDEAL VoltAware, and giggles at a patent. Thanks to http://www.triosmart
From playlist Product Reviews & Teardowns
EEVblog #961 - Monkey Debouncing
How do you debounce a clapping monkey? Probes The Monkey makes his return. All about contact debouncing, setting up a universal counter as an event counter, and other issues that can arise on a seemingly simple test setup. Forum: http://www.eevblog.com/forum/blog/eevblog-961-monkey-deboun
From playlist Hacking / Experiments
EEVblog #1208 - Circuit Analysis & Debugging
Fundamentals Friday Dave answers a beginner forum question of why their 74HC390 based breadboard counter circuit does not work properly. Let's get up to our armpits in datasheets and troubleshooting. A two sentence forum response turned into a step-by-step 27min video investigation involvi
From playlist Electronics Design / Build
Inventing the Ultimate Class-E Musical Tesla Coil (Single-FET SSTC) | A Complete Build Tutorial
Sign up and get $100 from NextPCB: https://www.nextpcb.com/register?code=LabCoatzdo $0 for 1-4 layers PCBs: https://www.nextpcb.com/pcb-quote?act=2&code=LabCoatzdo PCB Assembly capabilities info: https://www.nextpcb.com/pcb-assembly-services?code=LabCoatzdo Among solid-state Tesla coils,
From playlist Tesla Coils and High Voltage
Vacuum Tube Computer P.09 – Building the 4-bit Instruction Register
Straight up, this is the coolest looking piece of electronics I’ve ever built! It looks awesome, it works great, I couldn’t be happier. So, come along as we go through the journey of building the first finalized part of our vacuum tube computer. Also, check out these episodes I reference:
From playlist Vacuum Tube Computer
Geneva Wheel for Precise Indexing
A modified type of Geneva wheel that was developed to obtain precise intermittent indexing movements. This special mechanism was designed to eliminate any backlash or over-running action of the driven member at the end or beginning of each indexing movement. It uses a double locking, with
From playlist Geneva Mechanisms
Solar Powered Kindle - Part 14: Schmitt Trigger, 555 timer..working.
I have the 555 timer Schimitt trigger working...may be a few challenges left.. Equipment used: Fluke 115 digital multimeter Thurlby Thandar Instruments Precision Linear 30V 3A variable power supply NDL1205SC DC to DC converter Solderless breadboard voltage comparator circuit design (Schm
From playlist Solar Powered Projects
The Robert Adams 1851 English 5-shot revolvers can be cocked and fired simply by pulling the trigger. This would allow an officer or cavalryman to hold the revolver in his left hand while still holding a sword in his right. However, trigger cocking means a heavy trigger pull, not good fo
From playlist Handguns, Rifles and me
Solar Powered Kindle - Part 13: Schmitt Trigger using 555 timer
In this video I use a 555 timer IC to create a Schimitt trigger to create the hysteresis I need for the solar powered Kindle project. Still some bits to iron out.... Equipment used: Brymen 867 digital multimeter Thurlby Thandar Instruments Precision Linear 30V 3A variable power supply ND
From playlist Solar Powered Projects
The Schwarzlose machine gun was used by the Austro-Hungarian armies during WWI. To avoid Hiram Maxim’s multiple patents on machine gun mechanisms, the Schwarzlose uses a delayed-blowback mechanism. The breech is not locked to the barrel when the cartridge is fired, and so the breech and
From playlist Automatic Machine Guns