Invite the radio Amateurs with screen "electronics MC 6106" from domestic loac Elektronika MC 0585", method modifications, allowing use it in the IBM-compatible personal computer (PC).
As you know, monitor, especially if it is of high quality, is one of the most expensive parts of the PC. The use of converted monitor will allow ham, independently komplektuyuschie IBM-compatible PC and a limited in the spend money primarily on the acquisition of "powerful" system unit. Over time, this monitor of course will need to be replaced more perfect.
The proposed revision of the "Electronics MC 6106" relatively simple and quite able to even the novice radio Amateur. All elements of the notation are given by factory concept.
The biggest change is subjected to the block scan (BR). First of all you need to increase the horizontal frequency of 15 to 30 kHz. To this end, the capacitor S (4700 pF) in the master oscillator is replaced by a capacitor of the same type with a capacity of 2400 PF, and C41 (0.01 UF) in the output circuit is a capacitor of the same type capacity 2200 PF. You should also replace R67 (3 Ohm) resistor resistance 51 Ohms. To HR clock input connector he is admitted to the node frame scanning, the jumper connecting pins 1 and 2 on Board unit, perepahivayut to pins 2 and 3. It is also desirable to replace KDM (VD16) two diodes connected in series KDD (they are more reliable) and connect the common wire of the unit with a metal chassis of the monitor (this will eliminate possible vertical fracture lines in rows with long text).
Revision block high voltages (BVN) is to remove (to configure BVN frequency of 30 kHz) capacitor C1 (6800 pF), C3 (1000 pF) and replacing R1 (3 Ohm) resistor of 27 Ohms. The latter is required to limit the voltage at the anode of the CRT is a valid value.
To ensure proper binding of the video signals of primary colors to the level black in all three channels A1-AZ block amplifier (BWI) replace capacitor C5 (0.01 UF) oxide, the capacitance 15 µf rated voltage not less than 12 In (conclusions of their negative plates connected to a common wire). And to lowercase the synchronization signals received in the node line scan regardless video signal, the jumper connecting pins 2 and 3 on the Board of the STB, on perepahivayut pins 1 and 2.
In the conclusion, if necessary, adjust the convergence using the ring magnets on the neck of the kinescope, and the focus and geometric distortion raster rotation engines corresponding trimpot resistors.
Remade the video monitor is stable with most programs in MS DOS. For example, the image panels popular wrapper Norton Commander is reproduced without distortion of colors and quite clearly.
There are, however, shortcomings in the work of the monitor: the dimensions of the image be slightly less (it takes about 2/3 of the screen area), causing suffering the resolving power. It should also be noted that the monitor is not altered can work with programs that use synchronization lowercase the synchronizing pulses of positive polarity (for example, with the configuration program computer AMI WINBIOS). The image in this case is not synchronized.
Author: V. Patrascu, Krasnoarmeysk, Moscow region.