TC-6100 Cybertronic Temp Controller
... main sensing circuit must always sense the smaller temperature variation. Both sensing circuits have the same initial sensitivity, but since the auxiliary circuit error signal is affected by the ratio adjustment, its sensitivity may equal but never exceed that of the main circuit. The effect of the ...
... main sensing circuit must always sense the smaller temperature variation. Both sensing circuits have the same initial sensitivity, but since the auxiliary circuit error signal is affected by the ratio adjustment, its sensitivity may equal but never exceed that of the main circuit. The effect of the ...
Z-source Inverter Fed Induction Motor Drives – a Space Vector... Based Approach
... adjustable speed AC drives (ASD) with both voltage buck and boost capabilities as they allow inverters to be operated in the shoot through state. It utilizes an exclusive Z – source network (LC component) to link the main inverter circuit to the power source (rectifier). By controlling the shoot-thr ...
... adjustable speed AC drives (ASD) with both voltage buck and boost capabilities as they allow inverters to be operated in the shoot through state. It utilizes an exclusive Z – source network (LC component) to link the main inverter circuit to the power source (rectifier). By controlling the shoot-thr ...
Model SR540 Optical Chopper
... potentiometer, to control the motor speed. The set voltage can be overridden by a voltage at the CONTROL VOLTAGE input. The speed control voltage is buffered by 2/4 of U3, and attenuated by R8, R9 and R10. U2, a quad analog switch, selects the attenuation factor to provide full-scale voltages of 10. ...
... potentiometer, to control the motor speed. The set voltage can be overridden by a voltage at the CONTROL VOLTAGE input. The speed control voltage is buffered by 2/4 of U3, and attenuated by R8, R9 and R10. U2, a quad analog switch, selects the attenuation factor to provide full-scale voltages of 10. ...
unit 1 - WordPress.com
... • Unfortunately under these circumstances there is always a small offset because no op amp is never perfect and completely balanced. There is always a small input offset voltage. • This input offset voltage is small and arises from mismatches in the differential input stage of the op amp chip. These ...
... • Unfortunately under these circumstances there is always a small offset because no op amp is never perfect and completely balanced. There is always a small input offset voltage. • This input offset voltage is small and arises from mismatches in the differential input stage of the op amp chip. These ...
Constructing an High Power, Low Cost LED - Microscopy-UK
... of rapid on-off switching used by some control electronics and the cameras’ scanning or shutter systems. Cold light source. Spiders are typically examined under alcohol (or sometimes alive). A cold light source is desirable to prevent evaporation and convection currents in the alcohol. High colo ...
... of rapid on-off switching used by some control electronics and the cameras’ scanning or shutter systems. Cold light source. Spiders are typically examined under alcohol (or sometimes alive). A cold light source is desirable to prevent evaporation and convection currents in the alcohol. High colo ...
SA575 Low Voltage Compandor
... the audio path. The better filtered the power supply, the smaller this capacitor can be. R12 provides DC reference voltage to the amplifier of channel B. R6 and R7 provide a DC feedback path for the summing amp of channel B, while C7 is a short-circuit to ground for signals. C14 and C15 are for powe ...
... the audio path. The better filtered the power supply, the smaller this capacitor can be. R12 provides DC reference voltage to the amplifier of channel B. R6 and R7 provide a DC feedback path for the summing amp of channel B, while C7 is a short-circuit to ground for signals. C14 and C15 are for powe ...
5 - web page for staff
... parameters are readily measured using short- and opencircuit tests at the terminals. - At RF or microwave frequency, these parameter are difficult to measure - At high frequencies (in microwave range), scattering parameters (S parameters) are defined in terms of traveling waves and completely charac ...
... parameters are readily measured using short- and opencircuit tests at the terminals. - At RF or microwave frequency, these parameter are difficult to measure - At high frequencies (in microwave range), scattering parameters (S parameters) are defined in terms of traveling waves and completely charac ...
AN1009
... All pins that are connected to N+ diffusion are susceptible to negative undershoot, but special attention should be given to the V CC pin. This is connected to internal circuitry that increases the pin’s sensitivity to negative undershoots, to the extent that pulses of greater than -0.3 V may affect ...
... All pins that are connected to N+ diffusion are susceptible to negative undershoot, but special attention should be given to the V CC pin. This is connected to internal circuitry that increases the pin’s sensitivity to negative undershoots, to the extent that pulses of greater than -0.3 V may affect ...
J.R.Warren, K.A. Rosowski, and D.J. Perreault, “Transistor Selection and Design of a VHF dc-dc Power Converter,” IEEE Transactions on Power Electronics , Vol. 23, No. 1, pp. 27-37, Jan. 2008.
... on operation at fixed switching frequency and duty ratio (with on/off control for regulation) rather than constant-off-time/variable-frequency control as in [27], we can employ sinusoidal resonant gating for efficient operation at VHF frequencies. Likewise, we need not rely on the switch body diode ...
... on operation at fixed switching frequency and duty ratio (with on/off control for regulation) rather than constant-off-time/variable-frequency control as in [27], we can employ sinusoidal resonant gating for efficient operation at VHF frequencies. Likewise, we need not rely on the switch body diode ...
AC frequency and wavelength
... Below 500,000 Hz, we have “Long Wave” radio, used for maritime radio. Around 1,000,000 Hz (1 MHz, or 1 Mega-Hertz), we have AM radio. Between 2 MHz and 88 MHz we have “Short Wave” radio. Around 100 MHz we have FM radio. Between 100 MHz and 300 MHz, we have television. Between 300 MHz and 600 MHz, we ...
... Below 500,000 Hz, we have “Long Wave” radio, used for maritime radio. Around 1,000,000 Hz (1 MHz, or 1 Mega-Hertz), we have AM radio. Between 2 MHz and 88 MHz we have “Short Wave” radio. Around 100 MHz we have FM radio. Between 100 MHz and 300 MHz, we have television. Between 300 MHz and 600 MHz, we ...
Inductors
... N is the number of turns of wire A is the cross-sectional area of the toroid in m2. mr is the relative permeability of the core material mo is the vacuum permeability (4π × 10-7 H/m) l is the length of the wire used to wrap the toroid in meters ...
... N is the number of turns of wire A is the cross-sectional area of the toroid in m2. mr is the relative permeability of the core material mo is the vacuum permeability (4π × 10-7 H/m) l is the length of the wire used to wrap the toroid in meters ...
Ques1: State Ohm`s law and its limitations
... b) Electic circuits. c) Junction in a network d) Electric circuits. 4. For a given line voltage,four heating colis will produce maximum heat when connected in a) all in parallel. b) all in series. c) With two parallel pair in series ...
... b) Electic circuits. c) Junction in a network d) Electric circuits. 4. For a given line voltage,four heating colis will produce maximum heat when connected in a) all in parallel. b) all in series. c) With two parallel pair in series ...
End Semester Examination-2004
... 18. High voltage bus differential protection can be implemented with numerical relays. 19. The rate of change of flux with differential current is used to detect the internal fault in the generator differential protection. 20. Synchronized phasor measurement units permit computation of phase angles. ...
... 18. High voltage bus differential protection can be implemented with numerical relays. 19. The rate of change of flux with differential current is used to detect the internal fault in the generator differential protection. 20. Synchronized phasor measurement units permit computation of phase angles. ...
A Review on Performance Analysis of Matrix Converter
... adding three inductor, capacitor, switches and diodes. As ZSDMC permits the short circuit, the commutation process becomes simple and easy. This also reduces the voltage and current stress on the switch. The ZSDMC can reach voltage gain up to 1.15 but its inherited phase shift makes the control inac ...
... adding three inductor, capacitor, switches and diodes. As ZSDMC permits the short circuit, the commutation process becomes simple and easy. This also reduces the voltage and current stress on the switch. The ZSDMC can reach voltage gain up to 1.15 but its inherited phase shift makes the control inac ...
AL9910/ AL9910A/ AL9910-5/ AL9910A-5 Description Pin Assignments
... PWM dimming is achieved by applying an external PWM signal to the PWM_D pin. The LED current is proportional to the PWM duty cycle and the light output can be adjusted between zero and 100%. The PWM signal enables and disables the AL9910 - modulating the LED current. The ultimate accuracy of the PWM ...
... PWM dimming is achieved by applying an external PWM signal to the PWM_D pin. The LED current is proportional to the PWM duty cycle and the light output can be adjusted between zero and 100%. The PWM signal enables and disables the AL9910 - modulating the LED current. The ultimate accuracy of the PWM ...
FullLine Catalog home.indd
... • Zero ground contamination circuitry assures no damage to critical circuits • Isolated cable satellite and Telco connectors • Isolated outlet banks for digital and analog components • Three selectable delayed or remote turn on outlets for amplifier and active subwoofer power up ...
... • Zero ground contamination circuitry assures no damage to critical circuits • Isolated cable satellite and Telco connectors • Isolated outlet banks for digital and analog components • Three selectable delayed or remote turn on outlets for amplifier and active subwoofer power up ...
Ch14
... Resonance is a condition in an RLC circuit in which the capacitive and inductive reactance are equal in magnitude, thereby resulting in purely resistive impedance. Resonance frequency: ...
... Resonance is a condition in an RLC circuit in which the capacitive and inductive reactance are equal in magnitude, thereby resulting in purely resistive impedance. Resonance frequency: ...
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.