2SC Transistor Datasheet pdf, 2SC Equivalent. Parameters and Characteristics. isc Website： isc Silicon NPN Power Transistors. 2SC DESCRIPTION. ·Low Collector Saturation Voltage.: VCE(sat)= V(Max)@ IC= 6A. 2SC Datasheet PDF Download – Silicon NPN Epitaxial Type / High Current Switching Applications, 2SC data sheet.
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If an AC degaussing coil or substitute is unavailable, I have even donedegaussed with a datasheey magnet but this is not recommended since it is morelikely to make the problem worse than better. I wouldsuggest the kid’s room but most TV watching just rots the brain anyhow darasheet broken TV may be more worthwhile educationally than one that works. Similar comments to 2 above apply. Some sets no longer have any vertical size adjustments and depend onthe accurate regulation of the voltage to the vertical output stageto control vertical size.
With TVs, the main filter capacitor is nearly always on the mainboard.
2SC – Silicon NPN Epitaxial Type / High Current Switching Applications
Then it comeson and operates normally until it is turned off. These voltages will not be isolated from the line.
This can greatly aid in troubleshooting power supply problems. This was exacerbated by the tendency torun them devices at very high brightness levels. Monitors are more likely to have a separate power supply module. Possible regulation problems resulting in HV or total shutdown or power cycling on and off.
Horizontal size should be set so that there is about percentoverscan left and right. This will be the worst case. Rather, the dataeheet common problemswill be addressed and enough basic principles of operation will be providedto enable you 2sc334 narrow the problem down and likely determine a course ofaction for repair. Here are just a few of the most basic: In addition, the voltage spike will bemuch higher – perhaps destructively so.
The existance of such a control is becoming more common. Bulk tape erasers, tape head degaussers, open frame transformers, and the”ass-end” of a weller soldering gun can be used as CRT demagnetizers butit just takes a little longer. Wait a few minutes for dxtasheet caps to discharge but stay away from the CRT HV connector as it mayretain a dangerous and painful charge for a long timeuse an ohmmeter acrossthe various diodes dataaheet the power supply.
2c3346 ohmmeter reading should be fairly high – well certainly notless than ohms – in at least one direction. Tape any rubber wedges under the yoke securely in place as these will maintain the proper position and tilt of the yoke while you are messing with it.
Silicon NPN Power Transistors
Assuming it is good, measure the voltage on the collector-emitter of the HOT this is safe if there is no deflection. One or more large filter capacitors to smooth the unregulated DC. For added versatility, add a regular outlet and ‘kill’ switch using a quad box instead.
This could mean there are open fusable resistors other defective parts in the power supply or elsewhere. Some TV designs Zenith uses this in a few models automatically balanceCRT cathode drive by sensing emission from the red, green, and blue guns usinga gray scale reference pulse outside the viewable picture. I was just wondering what these computers used to do to the televisions to mess them up like that. First, measure across the input to the main power rectifiers – itshould not be that low.
We can deal with the latter case if needed later on. Most of the lower voltages used in the TV may be derived from the horizontal deflection circuits. More extensive treatment than provided by the built-in degaussing coil may be needed. Discrete multivibrator or other simple transistor circuit to provide base drive to the HOT. This might give clues as to what is wrong. It is best to make these adjustments with a crosshatch or dot test pattern Geometry adjustment: The main regulator is cycling on overvoltage due to lack of load.
Additionalcoils are needed to correct for pincushion and other geometric defects. If the reading is really low, there are other problems. If any of these are bad, they will need to be replaced with flameproofresistors of the same ratings though you can substitute an ordinaryresistor for testing purposes. The regulator is always turned off at the same time by a pulse from the high voltage transformer. Other external magnetic fields can sometimes cause a rotation without any other obvious effects – have you changed the TV’s location?
Clipping a good capacitor across the suspect with power off!
And, TVs no longer have powertransformers. If something is still shifting after warmup andget some cold-spray or even a little blower and try to locate the componentthat is drifting. Rock yoke from side to side to converge the top and bottomof the screen.
Warning about using a TV as a computer or video game display: The clamp in conjunction with rubberwedges or set screws 2c3346 that the yoke remains in position. Therefore mostof the repair information in this document is applicable to both TVs andstudio monitors.
The majority of consumers probably do not know eventhis simple fact.
However, it is more likely that you will break the neck off the tube since the neck is relatively weak. If they are fuzzy, especially in bright areas, then focus may needto be adjusted.