| Electronics > Projects, Designs, and Technical Stuff |
| Home Brew Analog Computer System |
| << < (10/66) > >> |
| megajocke:
Cool project! O0 :-+ |
| GK:
Oh no, another audio forum refugee :) How's it going? |
| GK:
The last batch of 0.1% resistors arrived today and this evening I was finally able to finish loading the prototype Sine/Cosine module PCB and test it out. It worked just as planned. I haven't calibrated it with a voltmeter or linearity tester yet; just tweaked it while viewing the waveforms on the oscilloscope. Here are some pics of it operating with the 0-100V unipolar triangle wave from the calibration/test oscillator used as an input signal. To recap, the Sine/Cosine module accepts a positive input signal ranging 0V to 100V representing phase angle, which is scaled to 3.6 degrees per volt, so 100V=360 degrees or two pi radians. The output has a scaling factor of 100, so sin(90) and cos(0) = 100V and sin(270) and cos(180) = -100V. In the cosine mode the module generates a continuous sinewave output from the 100V triangle wave test signal. Now I have another 8 of the Sine/Cosine boards to complete. I’m keeping a tally of the computers total component count. The PCB’s for the finished Sine/Cosine function chassis alone will contain a grand total of: 2252 resistors. 808 diodes 805 transistors 349 capacitors 51 trimpots 29 voltage reference ICs 27 single op-amps 18 quad op-amps 10 inductors 9 dual comparators 9 555 timers 9 reed relays 9 trimmer capacitors 4 CMOS digital ICs 2 regulator ICs 2 DPDT relays 2 diode bridges 1 quad comparator 1 crystal |
| robrenz:
Awesome work there GK :-+ Makes me feel electronically inept :'( |
| GK:
Yeah I'm pretty awesome. |
| Navigation |
| Message Index |
| Next page |
| Previous page |