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Brochure - Future Retro
Brochure - Future Retro

... Our versatile design allows it to be used as either a rack mount or desktop instrument, and its compact size makes it ideal for musicians on the go. In its simplest form the XS is an extremely powerful monophonic synthesizer including 46 controls with internal signal routings pre-wired in a way whic ...
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... manufacturers fail to realize the benefits that an AC power source can provide to them during compliance testing. Not only will using an AC power source increase productivity and save bench space by eliminating the need for other equipment, but also ensure that the production facilities test setup a ...
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... The VB026SP is mainly intended as a high voltage power switch device driven by a logic level input and interfaces directly to a high energy electronic ignition coil. The input Vin of the VB026SP is fed from a low power signal generated by an external controller that determines both dwell time and ig ...
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... The MAX17552 5V EV kit (TDFN) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17552 60V, 100mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin TDFN package. The EV kit operates over a wide input voltage range of 6V to 60V and ...
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... output voltage from a +3V to +11V input source. It delivers up to 6mA output current, depending on the input voltage. The MAX5026 is a constant-frequency, pulse-width-modulating (PWM), current-mode step-up voltage converter with an internal power switch that operates at 500kHz. This EV kit demonstra ...
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... control each half of the H-bridge with a different PWM module. See Figure 10 for details of one H-bridge connection and Figure 11 for the whole 3-phase topology. The synchronization between the FlexPWM0 and FlexPWM1 modules is done by a Master Reload Signal (MRS) from the FlexPWM0 module, as shown i ...
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... Continuous Conduction Mode or in Discontinuous Conduction Mode, depending on the waveform of the inductor current [1]. Voltage Mode Control and Current Mode Control are two main methods to control switching. Both of these two methods can be applied with either PWM (Pulse width modulation) or PFM (pu ...
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... The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 ...
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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.
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