 | | Re: Pneumatic Solenoid Valve Interest Poll —
| | | | The better model railway ('railroad') point ('turnout' or 'switch') controllers use a largish capacitor to drive their solenoids. This has several benefits: it provides a high voltage/current to drive the solenoid and it isolates the solenoids (...) (25 years ago, 4-Feb-00, to lugnet.robotics)
| | | | | | | | | | Re: Pneumatic Solenoid Valve Interest Poll —Pete Sevcik
| | | | | (...) A variation on the capacitor idea is to put a large non-polarized capacitor in series with the solenoid. Put a diode in parallel with the capacitor. Apply reverse output to charge up the capacitor, then apply forward output. This will (...) (25 years ago, 4-Feb-00, to lugnet.robotics)
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