CGS bus driver: Difference between revisions
Jump to navigation
Jump to search
Content added Content deleted
No edit summary |
No edit summary |
||
| Line 24: | Line 24: | ||
Surface mount capacitors of 1206 or 805 are used on the rear of the PCB. See above. |
Surface mount capacitors of 1206 or 805 are used on the rear of the PCB. See above. |
||
For best results, hand match the resistors. This may |
For best results, hand match the resistors. This may necessitate you buying 100 resistors to sort through. |
||
Use IC sockets. Once the unit is assembled, power it, with no inputs connected. Check the voltages at the outputs. Ideally, they will all be at zero. If an output is too far from zero, replace the corresponding chip. (0.083V = a semitone, so 0.005 V would be |
Use IC sockets. Once the unit is assembled, power it, with no inputs connected. Check the voltages at the outputs. Ideally, they will all be at zero. If an output is too far from zero, replace the corresponding chip. (0.083V = a semitone, so 0.005 V would be noticeable.) That chip can be used in other projects where such an offset is not a problem. |
||
If using a boxed header for the power connection, it will need a little filing so it clears the leads of the Ferrite beads. |
If using a boxed header for the power connection, it will need a little filing so it clears the leads of the Ferrite beads. |
||