Stereo Amplifier Of 500 Watts Quasi Complementary Stereo Amplifier Of 500 Watts Quasi Complementary The output transistors MJL21194 are of great power and performance. They must be very well adjusted with through screws, washers and nuts and properly insulated from the heatsink with mica insulators. Remember to use silicone grease and tighten the screws very well, so that the heat is transmitted from the transistors to the heatsink. After screwing them to the heatsink, verify that they have been isolated from the heatsink. This is done by placing the multimeter in continuity and place one end of the multimeter in the sink and the other in the transistor collector, which is the pin or terminal of the center. You should not mark anything or infinity (a 1 on the left). NOTE: The original power transistors are low gain. Therefore, if you use transistor MJL21194, you must have a maximum hFE or gain of 40. If you do not get these transistors you can use the 2SC5200, but you should also lower the transformer voltage to 45x45VAC. So the maximum that will be achieved is a power of 400W.

PIC30F4011 oscilloscope and spectrum analyzer 128×64 glcd

Scopey II: A Simple Scope and Spectrum Analyzer Facing the demise of my Tektronix 2213 in an somebody transport traveling, I featured the mind of either purchase an costly CRT to get it running again, or payment my nights aquatics ebay for other ambit. Having two not so uppercase options, and having conscionable mark with copious amounts of withdraw experience, I definite to upright sort my own. Patch it power not feature the unvaried bandwidth or accuracy of the old Tektronix, it is a accessible lowercase device that I’m trusty will be quite efficacious once I block tinkering with it, and it has several nifty features that a nimiety