Tektronix 645
.jpg) TOP VIEW |
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.jpg) Gradicule off |
.jpg) HORZ. SECTION. |
.jpg) VERT , SECTION |
.jpg) VERTICAL replaced 1 bad CAP was here. |
 connected to ECU crank sensor. uising my engine simulator. |
.jpg) new scale LEDs , 2v rated, in series and with 220 ohm resisitor 1/4w |
.jpg) just LEDs 5v rated. |
.jpg) Completed ,4 LED, for 100 year, life and never again 4 hours labor to change out. these LED are 5vdc not 2v. so wire directly with no resistors. The LED fit perfectly in side the front panel machined holes, amazing. |
.jpg) the LED will last forever, i have digital clocks i built back in 1975 that still operated. Using 7-seg LED. |
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