??? 11/17/11 16:57 Read: times |
#184778 - not for commercial use Responding to: ???'s previous message |
However, i was wondering if there is another way to achieve a multi-channel analog output module. Precision and speed are not very critical, as the outputs are supposed to send a speed and/or position signal to a Servo drive to control dampers for Air flow.
This might sound stupid, but i was wondering what if multiple Sample-and-hold amplifiers are used in front of a DAC and the DAC is run at a high speed to output a voltage that is "latched" in a Sample and Hold amp ? Lets say we talk about 8x SnH amps at front of a DA ? Is this even possible / practical ? practical, no smart, no feasible, no good, no legal for commercial use, no now since you are in farawayistan and do not have access to a full range of components: IF THIS IS "JUST FOR FUN": however clumsy and imprecise id possible if your device receiveing the analogs has a reasonably high input impedance use analog switches to switch between caps connected to the high impedance analog inputs. this would be a reckless approach to a commercial product Erik |
Topic | Author | Date |
Multiple Analog Outputs. | 01/01/70 00:00 | |
Don't dismiss single DACs | 01/01/70 00:00 | |
Resolution/precision | 01/01/70 00:00 | |
RE: #184777 - Resolution/precision | 01/01/70 00:00 | |
But is 4k steps needed when you have play? | 01/01/70 00:00 | |
not for commercial use | 01/01/70 00:00 | |
RE: #184778 - not for commercial u | 01/01/70 00:00 | |
how else would you ... | 01/01/70 00:00 | |
RE: #184782 - how else would you ... | 01/01/70 00:00 | |
Same-same | 01/01/70 00:00 | |
RE: #184785 - Same-same | 01/01/70 00:00 | |
why do you think I said "high input impedance"? | 01/01/70 00:00 | |
Similar stuff ! | 01/01/70 00:00 | |
State the actual requirement! | 01/01/70 00:00 | |
RE:#184789 - State the actual requirement! | 01/01/70 00:00 | |
Still no answer to "need" | 01/01/70 00:00 | |
No, that is not a requirement! | 01/01/70 00:00 | |
Very interesting how this always comes up | 01/01/70 00:00 | |
RE: #184792 - No, that is not a requirement! | 01/01/70 00:00 | |
Yes, bits matter | 01/01/70 00:00 |