I'm looking at displaying video on my Tektronix 606A X/Y diaplay. I will use this circuit http://www.electronixandmore.com/project/14.html specifically version 2 Improved Solid-State Converter. I do plan on using three dual op amps as well to provide a buffer to the circuit and also to provide adjustable gain while allowing the diaplay to be used with other signals. I plan on putting the variable resistors in between the buffer and output stages and I will use multi turn pots all around if they are available in the values I need. I also will connect each op amp input to a SPST switch so I can select either the circuit or an external input. I will also use an inverter on each signal so I can drive both positive and negative inputs on the display and I also will use a DPDT switch as well so I can reverse polarity of the outputs if needed for the device I'm driving with this circuit without having to switch cables around. I plan on leaving the Z axis DC coupled while keeping the X and Y axis AC coupled. I will have to build a dual supply for the op amps though which shouldn't be too difficult only needing a 24 V CT transformer and a bridge rectifier with a 7812 regulator and a 7912 regulator and I will run the 7805 regulator directly off the bridge rectifier. This is a larger project for me so it may take a while to build. I will put the power supply and actual circuit in separate boxes. Only thing I need to know is a good op amp for video signal use and if LM741 op amps will be OK for the vertical and horizontal signals. Sounds like overkill, but I want one box that interfaces with any scope or display I have or may get and I think this will do it.

This is what happens when you have too many oscilloscopes and other displays laying around :D

:lurk:

"Hunny! Why do you spend so much time down in your work room?" :D



Should be good!

I hope so. Once I get some more info from you all and get a schematic drawn up for the op amp buffers, the output op amps with some gain and the inverters with the same amount of gain as the op amp outputs I should be in buisness. Now if it was vacuum tube I would already know what I need. Only thing I'm wondering is if I should use a single variable resistor on both the output op amp and inverter or should I use one variable resistor for each output op amp and each inverter. Should be fun to get going. I could also install an oscilloscope clock in the case. that way I can switch the display from video signal to clock. What I would like to have is a couple of multi turn vernier dials with numbers on them (like some Tektronix scopes have) for the gain controls in the op amp output stages. That way I can write down the settings of those controls for different inputs to make setup easier.

Geeky, but cool.

Yes it is cool. I haven't been able to work on it yet.