Optiswitch 5200c measuring instruments pdf manual download. Voltage regulator 7800 and 7900 series specification. Reference book on horizontal output transformers by konig company reference books on integrated circuits, microcontrollers and transistors, over 20,000 devices search the data sheets archive reference book on mechanisms of audio and video equipment, about 150 service manuals. Horizontal output transistor vceo, vcbo, ic maximum, ft gainbandwidth above is a table of application requirement and important specification that you can use for guidelines when comes to transistor replacement. For your information, if the horizontal output transistor hot have a built in damper diode then this tester cant test out the hfe value. The sixth edition of the general electric transistor manual has been completely. If you mean the vertical and horizontal transformers, then your referring to the scanning system used by older tv systems, the beam on a tv is scanned from left. New transistor not mounted properly to heat sink probably needs mica washer and heat sink compound. Junction transistors bjts there are two types of bjts, the npn and pnp the two junctions are termed the baseemitter junction and the basecollector junction in order for the transistor to operate properly, the two junctions must have the correct dc bias voltages the baseemitter be junction is forward biased. Understanding transistor replacement, substitution and. Thats all fine and dandy, but without your tvs service manual, youll have no idea which transistor is your horizontal output transistor.
Off the top of my head shorted horizontal output transistor, bad flyback not supplying hv anode or filament voltages to tubes, bad vertical output ic causing chassis shutdown or cutting crt drive to save tubes from burnin. Electronic repair transistor cross reference replacement. The waveform at the collector of the horizontal output transistor is the most important waveform you should check on every tv before you begin changing parts, and after every tv is repaired. Horizontal output, vertical output transistor on a tv board home. Shorted or open internal capacitor in flyback transformer. The content and theme of this book in fact will be page 12. Horizontal output, vertical output transistor on a tv board. These three connections are the base, emitter, and collector of the horizontal output transistor or the gate, source and drain if a fet is used. Connect the yellow test lead clip to the collector of the horizontal output transistor. En npn triple diffused planar silicon transistor 2sd color tv horizontal deflection output applications applications color tv horizontal diflection output.
Aug 10, 2019 en npn triple diffused planar silicon transistor 2sd color tv horizontal deflection output applications applications color tv horizontal diflection output. Replacement transistor not correct or inferior cross reference. Reference book on horizontal output transformers by hr company. Even if your previous technical experience is limited to clicking the remote, this book can show you how to pinpoint your tvs problem and fix itnusing just a few basic tools. The emitter sends a current out into the circuit, but only. With what connection to use the open collector output can be freely. Will a tv turn on even if the horizontal output transistor. Here in this video i am showing how to test and trouble shoot television circuit. The horizontal output stage is practically responsible for the complete and efficient operation of the entire tv. The right test equipment to check the electronic components. Improper drive to horizontal output transistor hot. D datasheet pdf, d data sheet, d, d power amplifier with volume control and tone control overview the an is an integrated circuit designed for 4. The collector accepts an input current from the circuit, but it cant send the current through the transistor until allowed to by the base.
It is always the largest transistor, closest to the flyback transformer. Higher voltage, ampere and wattage will cause complete destruction to the transistor because it is not easy to find an exact replacement for horizontal. Horizontal output transistors keep blowing or excessively. If you are looking for replacement of signal transistor, a higher voltage, amp,and watt will do the job but not in the case if you want to find a replacement for horizontal output transistor. There are books galore on this but surely someone knows of a site that has them listed and searchable my query is a simple one i have no 2n5551 transistors on hand and i want to see if one in my box will do the job. This fault, and how to correct it is stated in the book. May 17, 2019 if this number is not available, you can use exact substitute after reffering it to transistor data book and equivalents. It is an amplyfying transister that drives the horizontal output transformer that drives the deflection yoke to drive the horiz trace across the crt screen.
Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Is there anything available to see if a particular transistor can be replaced with a different one. Will a tv turn on even if the horizontal output transistor is. Searching the right transistor for substitution is a skill, if you replace wrong specifications of transistor. The top countries of supplier is china, from which the percentage of horizontal output transistors supply is 100% respectively. The rca transistors and semiconductor diodes brochure from 1957 contains an introduction on semiconductor physics along with detailed specifications on germanium pnp transistors and a few semiconductor diodes 1n34a, 1n38a, 1n54a, and 1n58a, dimensional outlines, an interchangeability directory, and example. Product specification silicon npn power transistors 2sd1551. Dw manuals very few of these manuals are not very good scans hopefully though, they will help you enough to service your equipment. Yeah, even many books are offered, this book can steal the reader heart correspondingly much. The squeal you heard was the high voltage trying to come up for the picture tube. Finding transistor replacement can take you hours if you dont know the right method to do it. A transistor is basically 2 diodes that share one end. Bipolar power transistor selection guide january 2003 table of contents product page general purpose transistors horizontal deflection output transistors product page dpak d2pak sot223 ipak to126 todarlington transistors dpak ipak to126 to220 to220f to3p to3pf switching transistors dpak d2pak. Capable of being mounted easily due to onepoint fixing type plast.
An example, a rather common fault is for the horizontal output transistor to go bad. Hum tech electronics crt television troubleshooting guide. Nov 05, 2010 sir my onida 20 xs dlx tv is dead by a thunder, so i replaced transistor d1802 and main capacitor 220450v on main power section area but no use, so i changed the horizontal output transistor d1426 also but still no use. Why horizontal output transistor in crt monitor get shorted. This revised edition features a wealth of timely and practical new material on upgrades, too. Jun 06, 2008 the squeal you heard was the high voltage trying to come up for the picture tube. In a modern monitor, this is typically a to218 package, sometimes referred to as a to3p p. See all formats and editions hide other formats and editions. I bought this ge transistor manual when it came out in the new edition approx. If this number is not available, you can use exact substitute after reffering it to transistor data book and equivalents. Open collector enables the collector of an output transistor to be opened to the user for various applications. Rca power devices data book 1978 rca corporation 1978 acrobat 7 pdf 40. This definition appears frequently and is found in the following acronym finder categories. A weak drive might cause the hot to turn on or more likely shut off too slowly greatly increasing heat dissipation.
The most widely used circuit symbols are also shown see fig. Searching the right transistor for substitution is a skill, if you replace wrong specifications of transistor i. View and download krohne optiswitch 5200c operating instructions book manual online. Transistor data for 2sa, 2sb, 2sc, 2sd, 2sj and 2sk. The horizontal output transistor is switched on and off at the horizontal frequency of 15,734 hz. Output forms include open collector output as a comparator output and 4 to 20 ma dc current output or 1 to 5 v dc voltage output as an analog output.
T get too hot, then short after hoursdays or weeks after replacements. Horizontaldeflection output transistors west florida components. All information, forms, and other resources available on or through this manual pack should be used only as a general guide and should be. Horizontal output transistor problems electronic engineering. This toshiba 2sc5148 horizontal output transistor 2sc5148 works for these tv models. Horizontal output, vertical output transistor on a tv. Well, the test result are more or less the same as testing the fet breakdown voltage. Horizontal output transistors keep blowing or excessively hot. No picture and no audio but on screen display osd present.
Rca 31gt720, rca 32f530, rca 32gt740, rca 35gt720, rca 35gt740, rca 36f530, rca 46gw945, rca 46gw947, rca 46gw948, rca 60gw947, rca 60gw948, rca ctc197ca, rca ctc197ch, rca ctc197ch2, rca ctc203cx, rca f27650, rca f317, rca f32444, rca f32450, rca f32645, rca f32649, rca f32650, rca f32665, rca f32668, rca. Sometimes, the horizontal deflection is designed based on the quirks of a particular transistor. Rca 31gt720, rca 32f530, rca 32gt740, rca 35gt720, rca 35gt740, rca 36f530, rca 46gw945, rca 46gw947, rca 46gw948, rca 60gw947, rca 60gw948, rca ctc197ca, rca ctc197ch, rca ctc197ch2, rca ctc203cx, rca f27650, rca f317, rca f32444, rca f32450, rca f32645, rca. Transistor tester is control by a rotary pulse encoder with switch, or short by rpews, this component have four mode of operation, a short time press the knob, press and hold, left and right rotate the knob. Full text of zenith zenith dt2 data display service. Horizontal output transistor testing hindi urdu youtube. Wells gardner k700071xx76xx78xx79xx monitor cap kit. It also the transformer that is performs the funtion of supplying eht at some 23kv besides focus volts of 5kv plus other secondary voltages. I will show you the way how to test a horizontal output transistor. My only grip is that amazon stated that this was a hardback. Understanding transistor replacement, substitution and information is very important for a electronic repairer. D datasheet pdf, pdf, pinout, equivalent, replacement, schematic, manual, data, datasheet, circuit, parts. En2428a npn triple diffused planar silicon transistor 2sd1881 color tv horizontal deflection output applications applications package dimensions color tv horizontal diflection output. Apr 15, 2006 it is an amplyfying transister that drives the horizontal output transformer that drives the deflection yoke to drive the horiz trace across the crt screen.
Diode, transistor and fet circuits manual is a handbook of circuits based on discrete semiconductor components such as diodes, transistors, and fets. The shared end is called the base and the other 2 ends are called the emitter and collector. Amplification is provided by transistors q303 and q304 with the emitter of q304 feeding the base of the vertical driver q305. The vertical output transistors, q306 and q307 are wired in the standard pushpull configuration. A drive signal to this horizontal output transistor at the proper frequency and duty cycle to switch it on and off properly. The book also includes diagrams and practical circuits. With out knowing what and ware your are using it, you should choose a similar part. Common moderate moderate output input impedanceimpedance. Making horizontal output dynamic measurements with the.
Bipolar power transistor selection guide january 2003 table of contents product page general purpose transistors horizontal deflection output transistors product page dpak d2pak sot223 ipak to126 todarlington transistors dpak ipak to126 to220 to220f to3p to3pf switching transistors dpak d2pak to92 to126 to220 to220f to3p to3pf 2. Reference books on integrated circuits, microcontrollers and transistors. Review of the dy294 digital transistor testerpart 3. For a better understanding, refer to the load test block. A horizontal output transistor to provide a switched current path to energize the output transformer or coil. Connect the dynamic test lead to the corresponding circuit board points if you are making the tests with the horizontal output transistor removed.
The book describes basic and special diode characteristics, heat waverectifier circuits, transformers, filter capacitors, and rectifier. Dried up capacitors, open resistors or chokes, bad. The horizontal oscillator which controls the driver stage begins to turn the horizontal output transistor on approximately 3035 s before horizontal sync as shown in figure 3. How to choose a replacement for a bipolar transistor total. In a modern monitor, this is typically a to218 package, sometimes referred to as a to3p p for plastic package as well. Connect the black test lead clip to the horizontal output stage ground typically at the h. All information, forms, and other resources available on or through this manual pack should be used only as a general guide and should be modified to meet. How to troubleshoot crt television switch mode power supply. Transistor uses, transistor rules, common emitter circuit, small signal amplification, fieldeffect transistors, jfet operating regions.
Analyzing the horizontal output pulse with the waveform analyzer. Understanding the ha2500 horizontal output load test. The hot conducts until the start of horizontal sync and then is abruptly. Second, they provide specifications for the other manufacturers transistors, too. Horizontal output transistor problems free download as pdf file. Transistor circuits for a wide range of applications are discussed in this book, along with many different diode and transistor types. Dec 27, 2012 if you mean the vertical and horizontal transformers, then your referring to the scanning system used by older tv systems, the beam on a tv is scanned from left to right, and top to bottom, and uses scanning coils located on the neck of the tv tube, which are driven by transformers and in turn these will be driven by power transistors. Reference books on integrated circuits, microcontrollers and transistors ua. Free transistor circuits books download ebooks online. Making horizontal output dynamic measurements with the tva92.