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accumetric - PCB Piezotronics
accumetric - PCB Piezotronics

LT1372/LT1377 500kHz and 1MHz High Efficiency 1.5A Switching
LT1372/LT1377 500kHz and 1MHz High Efficiency 1.5A Switching

DOEPFER MUSIKELEKTRONIK GMBH
DOEPFER MUSIKELEKTRONIK GMBH

... In the first place this module is intended to add/subtract control voltages (e.g. ADSR, LFO). Additionally input 1 works as an offset generator (range –5V...+5V) provided that no plug is connected to input one (this feature can be turned off by a jumper on the pc board). Even the output control work ...
DAC
DAC

... As long as the analog input VA is greater than VD, the comparator has an output which is high and the AND gate is open for transmission of the clock pulse to the counter. When VD exceeds VA the comparator output changes to low value and the AND gate is disabled. This stops the counting at the time w ...
MAX1534 High-Efficiency, Triple-Output, Keep-Alive Power Supply for Notebook Computers General Description
MAX1534 High-Efficiency, Triple-Output, Keep-Alive Power Supply for Notebook Computers General Description

... The MAX1534’s buck converter uses a proprietary current-limited control scheme with operation to 100% duty cycle. This DC-to-DC converter pulses as needed to maintain regulation, resulting in a variable switching frequency that increases with the load. This eliminates the high supply currents associ ...
STEVAL-ISA053V2
STEVAL-ISA053V2

... adjustable output voltages. This demonstration board is designed to test the performance of the PM6680A by employing a typical application circuit which allows testing of all the PM6680A device functions. The kit features two switching sections, with (typically) 3.3 V and 1.8 V outputs, from a 6 V t ...
AN4112
AN4112

... Brightness control using a light dependent resistor (LDR) In some battery operated applications, the microcontroller needs to be powered if the environment is lit; otherwise, it must be kept powered off. For such applications, a light dependent resistor (LDR), whose resistance depends on light inten ...
Programmable Gain Instrumentation Amplifier
Programmable Gain Instrumentation Amplifier

... of the PGA204/205. Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins as shown. The output is referred to the output reference (Ref) terminal which is normally grounded. This must be a low-impedance connection to assure good common-mod ...
Series and Parallel Circuits
Series and Parallel Circuits

Sci 9 Review Worksheet 8.3 Resistance and
Sci 9 Review Worksheet 8.3 Resistance and

... 14. A device draws a current of 1.2 mA when connected to 120 V. What is the resistance of this device in ohms and also in kilo-ohms. R = V/I V = 120 V, I = 1.2 mA = .0012 A; R = 120 V/ .0012 A = 100 000 Ω = 100 K Ω 15. Using Ohm’s Law, state the relationship of current, resistance and voltage. R = V ...
Pax Presentation
Pax Presentation

... o 80 nF @ 50 Hz (67 nF @ 60 Hz) o 4 nF @ 1 kHz ...
GAT Access 6100 Access Control Terminal
GAT Access 6100 Access Control Terminal

... NO (maker contact). Please observe the max. permitted switching voltages ...
LT1372/LT1377 - 500kHz and 1MHz High Efficiency 1.5A Switching
LT1372/LT1377 - 500kHz and 1MHz High Efficiency 1.5A Switching

... feedback voltage drops below 0.6V, the oscillator frequency is reduced 5:1. Lower switching frequency allows full control of switch current limit by reducing minimum switch duty cycle. Unique error amplifier circuitry allows the LT1372/LT1377 to directly regulate negative output voltages. The negati ...
Insulation Testing of Transformer
Insulation Testing of Transformer

... INSULATION TESTING OF TRANSFORMER ...
Inductive Load Arc Suppression
Inductive Load Arc Suppression

... (DC) inductive circuits typically use a diode to prevent the high voltage. The diode in the circuit is called a suppression diode, flyback diode, freewheeling diode, or catch diode. However, a diode cannot be used in an alternating current (AC) circuit. AC arc suppression requires the use of a metal ...
original article
original article

Study Guide (AP1)
Study Guide (AP1)

R07 SET-1 Code.No: R07A1EC06
R07 SET-1 Code.No: R07A1EC06

... respect to the other. After this duration the potential difference between the plates is suddenly dropped to ‘0’ volts and remain the same there after. Find i) The position of the electron, which started with zero initial velocity from the negative plate, when the potential difference drops to zero ...
L43067578
L43067578

... The conversions of ac-dc power converter are designed with two converter stages. The first stage is used to convert ac-dc boost converter such that the input ac voltage into an intermediate dc bus voltage. The second stage is dc-dc converters which convert the dc bus voltage into the required dc out ...
S0310
S0310

... supervision and IN/OUT field wiring using terminals that accept #12 to #18 AWG wiring. Combination speaker strobe appliances signals shall incorporate a Xenon flashtube enclosed in a rugged Lexan lens or equivalent with solid state circuitry. Strobe shall meet ULC and produce a flash rate of one (1) ...
Evaluates:  MAX5883/MAX5884/MAX5885 MAX5885 Evaluation Kit General Description Features
Evaluates: MAX5883/MAX5884/MAX5885 MAX5885 Evaluation Kit General Description Features

... The MAX5885 EV kit features three ways to provide a reference voltage to the DAC: internal, on-board external, and user-supplied external reference. Verify that a shunt is not connected across jumper JU5 to use the internal reference. The reference voltage can be measured at the V_REF pad on the EV ...
OPA548 High-Voltage, High-Current OPERATIONAL AMPLIFIER
OPA548 High-Voltage, High-Current OPERATIONAL AMPLIFIER

... The Safe Operating Area (SOA curve, Figure 2) shows the permissible range of voltage and current. ...
SLMD121H04L Datasheet - IXYS Power
SLMD121H04L Datasheet - IXYS Power

... Keep in mind these cost and performance tradeoffs when comparing various solar cell materials: Polycrystalline cells are commonly found in outdoor applications and have a spectral sensitivity range of 500nm to 1100nm. They’re in the medium price range and typically offer a 13% power conversion effic ...
Manual - James Miller`s Home Page
Manual - James Miller`s Home Page

... HCMOS signals at frequencies of 10 MHz, 5 MHz and 1 MHz are available from the three central BNC sockets, whilst the right-hand numeric push-button switch selects from 1 Hz to 100 kHz in decade steps ("0" = 1 Hz) and outputs to the fourth BNC socket. GPS and controller diagnostic data is available i ...
LM340 Series Three Terminal Positive Regulators
LM340 Series Three Terminal Positive Regulators

... LM340 and Q1, the diode D1 should be physically located close to the pass transistor on the heat sink in such a manner as to keep it at the same temperature as that of Q1. If the LM340 and Q1 are mounted on the same heat sink the LM340 should be electrically isolated from the heat sink since its cas ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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