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How to Build Your Own Radiation Detector
How to Build Your Own Radiation Detector

... for a family home evening project or as a Friday night date, there are several alternatives. You can make one from two normal NPN transistors (rated for about 40 V collector to base and 1 amp current). You may also be able to get this to work with a run-of-the-mill transistor, but it will be less se ...
Evaluates:  MAX1710/MAX1711 MAX1710 Evaluation Kit General Description Features
Evaluates: MAX1710/MAX1711 MAX1710 Evaluation Kit General Description Features

... stress in the MOSFET. Vary the high-level output voltage of the pulse generator to vary the load current. To determine the load current, you might expect to insert a meter in the load path, but this method is prohibited here by the need for low resistance and inductance in the path of the dummy-load ...
igcse physics 0625 / 3
igcse physics 0625 / 3

Chap. 3 Conceptual Modules Fishbane
Chap. 3 Conceptual Modules Fishbane

... resistor with current I1 flowing. Then we go through the middle battery (but from + to – !), which gives –4 V. Finally, there is a drop through a 2 W resistor with current I2. ...
Image Processing Noise Removal using a Cellular
Image Processing Noise Removal using a Cellular

... but for higher speed of cell circuit and CNN it is better to make this capacitor small. On the other hand, a higher value is recommended according to the problem with local minimums. An optimal value is used in the circuit in this paper for technology, size area, and correct function of CNN. The res ...
Solution Derivations for Capa #11
Solution Derivations for Capa #11

... A) False, initially capacitors act like wires without resistance, so there is no voltage drop. B) True, there is no current elsewhere in the circuit, so there are no other voltage drops. See (#1). C) True, after a long time a capacitor acts like an infinite resistor, so no current can flow. Thus, th ...
PFT-301CM 30 kV Portable AC Hipot
PFT-301CM 30 kV Portable AC Hipot

STK5DFU340D-E Advance Information 2-in
STK5DFU340D-E Advance Information 2-in

time of completion
time of completion

... a. The capacitive reactance must be equal to the inductive reactance. b. The resistance must be equal to both the inductive reactance and the capacitive reactance. c. The resistance must be greater than the inductive reactance. d. The inductive reactance must be greater than the capacitive reactance ...
New Instrumentation Amplifiers Maximize Output Swing on Low
New Instrumentation Amplifiers Maximize Output Swing on Low

Ohm`s Law PowerPoint
Ohm`s Law PowerPoint

... member a year later. The physical unit measuring electrical resistance was given his name: OHMS LAW. ...
Steering in the right direction
Steering in the right direction

Master Notes
Master Notes

... element has the higher voltage. As we move around the loop, we can show sources as positive and loads as negative if we assign each element the polarity we find as we leave that element. In this case, as we start in the lower left hand corner and proceed up, we encounter the 3 V voltage source first ...
Operating principle of Electrical Measuring
Operating principle of Electrical Measuring

Ohms Law for Beginners.
Ohms Law for Beginners.

Low voltage CMOS quad 2-input NOR gate with 5 V tolerant inputs
Low voltage CMOS quad 2-input NOR gate with 5 V tolerant inputs

... All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and service ...
TS1109 - Silicon Labs
TS1109 - Silicon Labs

Voltage Divider/Wheatstone Bridge Lab
Voltage Divider/Wheatstone Bridge Lab

Multi-functional Packaged Antennas for Next
Multi-functional Packaged Antennas for Next

... For VGS > Vt0, the electric field resulting from the gate voltage repels holes from the region under the gate, but attracts electrons, which can now flow easily between two n-type contacts (drain and source). This phenomenon manifests itself as an n-type channel between the drain and the source (thu ...
DC Circuits, Practical Problems
DC Circuits, Practical Problems

... The current through each individual bulb depends on the power rating of the bulb. The power rating on each bulb measures the rate of which the bulb can transform electrical energy into heat and light energy: the greater the power, the greater the current. The greatest current is through the 100 watt ...
linalg paper 1
linalg paper 1

... As it stands this set of equations cannot be solved because it will produce differential equations and there have been no initial conditions set forth. The method, though, is the same as it was for a resistor network only now incorporating differential equations to produce a more powerful tool for t ...
Methods of Analysis and Selected Topics (dc)
Methods of Analysis and Selected Topics (dc)

renewable_energy_wind_and_water
renewable_energy_wind_and_water

... keeps on blowing.” Kieran: “It sounds as if something is wrong, I would get an electrician to have a look at it.” 16 of 30 ...
Alternating current
Alternating current

... keeps on blowing.” Kieran: “It sounds as if something is wrong, I would get an electrician to have a look at it.” 16 of 30 ...
here - SCCS Swarthmore College Computer Society
here - SCCS Swarthmore College Computer Society

< 1 ... 719 720 721 722 723 724 725 726 727 ... 984 >

Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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