Author: Rust

TDA8932B/33(B) Class D Audio Amplifier in Single Supply Single Ended Configuration

The following circuit diagram is a simplified application circuit of the TDA8932B/33(B) device when operated from an asymmetrical supply (single supply). Here’s the circuit diagram: To simplify the design for an asymmetrical supply in SE configuration, the TDA8932B/33(B) is equipped with three integrated half supply voltages buffers. The first buffer is for the reference decoupling capacitor (Chvpref) on HVPREF (pin […]

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Category: Audio and Music Tags:

TPS65552A Xenon Tube Flash Driver

The size of the photoflash charger circuit is greatly simplified and reduced by Texas Instrument (TI) TPS65552A. A photoflash capacitor charger based on this device is shown on the circuit diagram below. All the necessary  function such as charging controls, output feedback, charge completion status, insulated gate bipolar transistor (IGBT) driver, and circuit protections needed to implement a small, efficient […]

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Category: Lighting and LED Circuit Tags:

TPS61059 White LED Driver for Photoflash or Movie Light

Manufacturers are starting to turn to new high power to provide a photoflash function for these low-light conditions called white-light LEDs. These LEDs output is a wide light spectrum and it’s compact and easy to control. Unlike Xenon gas-discharges tubes which require hundreds of volts to flash, white-light LEDs can be operated in very low voltages. Additionally, to provide lighting […]

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Category: Lighting and LED Circuit Tags:

Power Amplitude Modulator

We can use L200 to send a signal onto a supply line. We can define Vo as Vo = Vref (1+ R2/R1)  since the input signal Vi is DC decoupled. The gain of amplified signal is: Gv= -R2/R1 This amplified signal is added to this component. We must impose i1 = i2+i3 (1) by ignoring the current entering pin 4. […]

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Category: Power Supply Tags:
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