An Introduction to Sigma Delta Converters
... Sigma Delta modulators of orders higher than 2 are possible to construct but they cannot simply be made by adding further stages as above. The reason is that the phase turn caused by more than two integrators will make the system unstable. Low pass filters are used instead. Sigma Delta ADCs for audi ...
... Sigma Delta modulators of orders higher than 2 are possible to construct but they cannot simply be made by adding further stages as above. The reason is that the phase turn caused by more than two integrators will make the system unstable. Low pass filters are used instead. Sigma Delta ADCs for audi ...
1MHz, 6A Integrated Switch Synchronous Buck Regulator
... part will start up. Below this voltage the device is in its low quiescent current mode. The pin has a 1µA current source charging it to VIN. By adding a capacitor to this pin a delay may easily be generated. The enable function will not operate with an input voltage lower than the min specified volt ...
... part will start up. Below this voltage the device is in its low quiescent current mode. The pin has a 1µA current source charging it to VIN. By adding a capacitor to this pin a delay may easily be generated. The enable function will not operate with an input voltage lower than the min specified volt ...
AMIS60, AMIS120 v120704
... Precautions should be taken so that the means of grounding of a piece of equipment is not defeated. 8. Mains voltage must be correct and the same as that printed on the rear of the unit. Damage caused by connection to improper AC voltage is not covered by any warranty. 9. Have gain controls on ampli ...
... Precautions should be taken so that the means of grounding of a piece of equipment is not defeated. 8. Mains voltage must be correct and the same as that printed on the rear of the unit. Damage caused by connection to improper AC voltage is not covered by any warranty. 9. Have gain controls on ampli ...
UPA-1P : Compact Wide Coverage Loudspeaker
... two-way enclosure. The loudspeaker features a 12-inch cone low-frequency driver and a 3-inch-diaphragm compression driver coupled with a 100-degree horizontal by 40-degree vertical constant-Q horn. The versatile UPA-1P has many sound reinforcement applications, as a main frontof-house loudspeaker in ...
... two-way enclosure. The loudspeaker features a 12-inch cone low-frequency driver and a 3-inch-diaphragm compression driver coupled with a 100-degree horizontal by 40-degree vertical constant-Q horn. The versatile UPA-1P has many sound reinforcement applications, as a main frontof-house loudspeaker in ...
Analog Meters Clamping to DIN Rails
... the measurement of current, voltage & frequency in distribution, installations which utilizes 35 mm.DIN rails for equipment mounting. The mounting width is 45 mm. These meters housed in molded Polycarbonate cases are suitable for the measurement of AC current & voltage, DC current & voltage & Freque ...
... the measurement of current, voltage & frequency in distribution, installations which utilizes 35 mm.DIN rails for equipment mounting. The mounting width is 45 mm. These meters housed in molded Polycarbonate cases are suitable for the measurement of AC current & voltage, DC current & voltage & Freque ...
Radiotron Designer`s Handbook Tube CAD does the hard math for
... A cathode follower may be used either as driver for a Class B - AB2 stage, or as the output stage itself. A cathode follower forms almost an ideal driver stage, having very low plate resistance and distortion, although it requires a high input voltage. It is commonly used, either singly or in push-p ...
... A cathode follower may be used either as driver for a Class B - AB2 stage, or as the output stage itself. A cathode follower forms almost an ideal driver stage, having very low plate resistance and distortion, although it requires a high input voltage. It is commonly used, either singly or in push-p ...
Chapter 1
... connected by the capacitor only. The final value of output is VDD because once again, the capacitor becomes an open circuit at steady state. Assuming the input changes at t 0, ...
... connected by the capacitor only. The final value of output is VDD because once again, the capacitor becomes an open circuit at steady state. Assuming the input changes at t 0, ...
Low Voltage Boost Driver PR4404
... Output voltages up to 16V are possible. As the output power of the circuit is limited, the maximum LED current is lower by a factor roughly equal to the number of LEDs compared with single LED applications. Recommended dimensions: see power flashlight, except Rs changed to VFB/ILED. ...
... Output voltages up to 16V are possible. As the output power of the circuit is limited, the maximum LED current is lower by a factor roughly equal to the number of LEDs compared with single LED applications. Recommended dimensions: see power flashlight, except Rs changed to VFB/ILED. ...
DS1813 - Maxim Integrated
... The DS1813 EconoReset uses a precision temperature reference and comparator circuit to monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance ...
... The DS1813 EconoReset uses a precision temperature reference and comparator circuit to monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance ...
1 of 3 BYBEE MUSIC RAIL™ White Paper
... Before explaining what actually happens in the power supply of an audio amplifier, we must first string these analogies together. It has been shown mathematically by many practitioners over many decades that electric current is analogous to flowing water and vibrating strings. Let's now combine the ...
... Before explaining what actually happens in the power supply of an audio amplifier, we must first string these analogies together. It has been shown mathematically by many practitioners over many decades that electric current is analogous to flowing water and vibrating strings. Let's now combine the ...
MAX1848 White LED Step-Up Converter in SOT23 General Description Features
... The MAX1848 drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. The step-up converter topology allows series connection of the white LEDs so that the LED currents are identical for uniform brightness. This configuration eliminates the nee ...
... The MAX1848 drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. The step-up converter topology allows series connection of the white LEDs so that the LED currents are identical for uniform brightness. This configuration eliminates the nee ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.