Mgi photosuite 4 can i inverter
- MGI PHOTOSUITE 4 CAN I INVERTER HOW TO
- MGI PHOTOSUITE 4 CAN I INVERTER FULL
- MGI PHOTOSUITE 4 CAN I INVERTER TRIAL
The 2SA1209 and 2SC2911 are shown with a thick black line to indicate the back metal part of the case. This is easily done by checking the total amplifier current with both 220R set to minimum and then increasing one 220R to give a 100mA increase in the total current, then adjusting the other 220R to give a further 100mA increase in current. After completion of the whole amplifier each 4k7 is adjusted so that the mosfet sources are at about half the total supply voltage, and the 220R is adjusted to set the quiescent current of the mosfets to 100mA. The 4k7 presets can initially be set to their mid point and the 220R set to minimum. The next diagram shows the resistors and presets added to the board. I have used these laminated boards myself many times with no problems, including my distortion extraction circuit, which I have used to measure distortion components down to -140dB and beyond.
MGI PHOTOSUITE 4 CAN I INVERTER FULL
There is no real advantage to using the full fibreglass boards, the difference in dielectric properties has practically no effect for a single sided board with widely spaced tracks, and the greater physical strength has little if any benefit in this application. Using the laminated type boards with just a thin surface layer of fibreglass the drills will last longer. Reground carbide drills are available for about £12.50 (UK) for a pack of 10. The type with a thicker top section are apparently easier to break than those with a constant diameter, which can flex a little more before breaking. It takes a little practice to avoid breaking drills, I broke 3 drilling 5 boards, but then did another 10 without breaking any. The carbide drills are rather fragile, and liable to break with a hand-drill unless a good stand is used. The 1mm drill bits should preferably be tungsten carbide if fibreglass boards are used, but cheaper 'HSS' (high speed steel) are adequate for the few larger size holes, although they will soon become blunt. The only other sizes needed are 1.2mm, which is needed for the fuse holder, and the inductors, and 1.1mm for the terminal blocks. The Panasonic TSUP 4700uF output capacitors need 2mm holes. The three holes for the fixing bolts are 3.2mm or 1/8 inch. A better idea may be to use a layer of cardboard, about 1mm thick, on the copper side and drill through this to stop the drill slipping around too much on the copper, but I never tried this yet.Īll holes can initially be drilled at 1mm, then the few larger sizes are easier to drill accurately. I usually drill from the non-copper side using this method, but then there are raised ridges round the holes on the copper side. I sometimes use this method to make a single board, but of course the UV method is neater and quicker if many boards are to be made. Then etch in ferric chloride solution, then clean off the etch-resist, e.g. Printing a mirror-image of the board diagram above to copy from helps. After cleaning the copper surface use an etch resist pen to draw in the connections. with double-sided sellotape or some other non-permanent method, then drill through the diagram and the board. When developed and etched the name 'MJR7-Mk5' should be printed the right way.Īn alternative method avoiding the light box is to print the layout on paper and stick this onto a piece of plain board, e.g. The transparency is used on the UV box with the printed side up so that the printing is in contact with the UV sensitive side of the board to give the clearest image. If using this program remember to check the 'aspect ratio' box when adjusting print size, then height and width will stay in the correct ratio.
MGI PHOTOSUITE 4 CAN I INVERTER TRIAL
I used MGI Photosuite to print the image the correct size, this has a 'print preview' which allows adjustment of the printed image size and gives a numerical print size which can be used with a little trial and error to get the right printed dimensions, i.e.
MGI PHOTOSUITE 4 CAN I INVERTER HOW TO
A good article about making PCBs is How to make really really good homemade PCBs. I have the FBS 240/E drill and MB 140/S stand made by Proxxon. A small hand drill is adequate, but for more frequent use a good drill with speed control and stand is invaluable. I bought my own light box second-hand on eBay. This is not too difficult, and the equipment need not be expensive. I use the high quality, plain paper, greyscale print settings.) The transparency can then be used with an ultraviolet light box and photo-sensitive boards to produce the PCB, a typical exposure time is 3 minutes followed by about 30 sec development time. This layout can be printed on transparent film (I use tracing paper myself, Goldline 112gsm, with a Canon S600 inkjet printer, which gives a good opaque image, but takes a while to dry. There are several ways to make the boards, two suitable for DIY constructors are described, the first using a UV light box, the second an etch resist pen.