TDAA Vertical Deflection Circuit. SYNCHRONISATION CIRCUIT ESD PROTECTED PRECISION OSCILLATOR AND RAMP GENERATOR POWER. View from ELEC 1 at Perm State University. TDAA VERTICAL DEFLECTION CIRCUIT SYNCHRONISATION CIRCUIT ESD. Find great deals for TDAA Vertical Deflection Circuit Original SGS. Shop with confidence on eBay!.
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This publication supersedes and replaces all information previously supplied. During the trace time the supply voltage is obtained from the main supply tda165a VS by a diode, while during the retrace time this pin is supplied from the flyback generator. The Sync input pulse at the Sync gate lowers the level of the upper threshold and than it controls the period duration.
Pin 4 is the inverting input of the amplifier used tdda1675a integrator. Power amplifier T his amplifier is a voltage-to-current power converter, the transconductance of which is externally defined by means of a negative current feedback.
The flyback generator supplies the yoke too. Between the heatsink and the package, it is better to insert a layer of silicon grease, to optimize the thermal contact; no electrical isolation is needed between the two surfaces. If the flyback pulse is absent short cirucit or open cirucit of the yokethe blanking output remains high so allowing the CRT protection.
TDA1675A Vertical Deflection Circuit Original SGS
EPS 8 spring tda1675x being sufficient. It is a full performance and very efficient vertical deflection circuit intended for direct drive of the yoke of o colour TV picture tubes. VS 1 25 Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips.
I9 I14 V1 Figure 1: At this pin the non-inverting input reference voltage supplied by the voltage regulator can be measured. Pin 7 The resistance between pin 7 and ground defines the current mirror current and than the height of the scanning. TBL Dimensions Information furnished is believed to be accurate and reliable. A clock pulse is generated. The internal clock turns off the lower power output stage to start the flyback.
Pin 14 is the main supply voltage input VS positive. C 0 0 50 A When the current across the yoke changes its direction, the output of the flyback generator falls down to the main supply voltage and it is stopped by means of the saturated output darlington at a high level. The value shown is indicative only.
EPS 5 10 V1 12 9 12 5 A The supply of the power output stage is forced at this pin. Pin 15 is the output of the flyback generator that, when driven, jumps from low to high condition.
An external network, Ra and Rb, defines the DClevel across Cy so allowing a correct centering of the output voltage. Re and the Boucherot cell are used to stabilize the power amplifier. The output of the power amplifier pin 1 falls under the main supply voltage and the output of the flyback generator is driven for a low state so allowing yda1675a flyback capacitor Cf to restore the energy lost during the retrace.
Pin 10 is the output of the buffer stage and it is internally coupled to the inverting input tdda1675a the power amplifier through Ttda1675a.
INTEGRATED CIRCUIT TDAA = A MULTIWATT 15
Flyback generator This tca1675a supplies both the power amplifier output stage and the yoke during the most of the duration of the flyback time retrace. An integrated diode stops the rising of this output increase and the voltage jump is transferred by means of capacitor Cf at the supply voltage pin of the power stage pin 2. An external capacitor Cf transfers the jump to pin 2 see pin 2. The series network Rc and Cc, in conjunction with Ra and Rb, applies at the feedback input I2 a small part of the parabola, available across Cy, and AC feedback voltage, taken across Rf.
The external components Rc, Ra and Rd, produce the linearity correction on the output scanning currentIy and their values must be optimized for each type of CRT. At this time the flyback generator starts to supply the power tda16775a amplifier output stage by a diode inside the device.
TDAA Datasheet(PDF) – STMicroelectronics
Pin 12 is the inverting input of the amplifier. The internal clock opens the loop of the amplifier and lets pin 1 floating so allowing the rising of the flyback.
Pin 13 is an open collector output where the blanking pulse is available. Pin 1 is the output of the power amplifier and it drives the yoke by a negative slope cur- Pin 2 rent ramply.