| ??? 12/10/07 01:08 Read: times |
#148021 - I decided to settle for the MCU Responding to: ???'s previous message |
SO it does look like there are no "ready-made" chip(s) for the job and hence I will have to go with an MCU. And get all the benefits that go with it.
Yes I am aware that solenoids when left ON for long do get hot and its always preferable to go with the "Hi-current-pull.in-low-current-hold.on" logic for such requirements. I forget the brand, but there are ready to use DIN plugs that have this functionality built in. And the other option for such long held switched requirements is to use a solenoid with mechanical "detent" facility - it just needs a 24V dc pulse lasting a second or so for shifting and once the spool shifts, it is held there by a spring loaded detent. ( Also called "memory valve" ! ) Raghu |
| Topic | Author | Date |
| Looking for a one of six selector chip | 01/01/70 00:00 | |
| HMM | 01/01/70 00:00 | |
| sounds like you need a PAL | 01/01/70 00:00 | |
| have you looked at 74HC237 with a 1 Hz clock? | 01/01/70 00:00 | |
| Oh-Oh-Use-Mcu | 01/01/70 00:00 | |
| Driving is easy. | 01/01/70 00:00 | |
| It is dead easy but ... | 01/01/70 00:00 | |
| Current, not voltage | 01/01/70 00:00 | |
| Practise and Theory | 01/01/70 00:00 | |
| I decided to settle for the MCU | 01/01/70 00:00 | |
| Memory relays and reset problems | 01/01/70 00:00 | |
| So ... you\'re using a latching relay? | 01/01/70 00:00 | |
| Example of a solenoid driver | 01/01/70 00:00 | |
| chip driver | 01/01/70 00:00 | |
| Yes, that's the kind of thing | 01/01/70 00:00 | |
| No, voltage, not current! | 01/01/70 00:00 | |
| AC solenoids | 01/01/70 00:00 | |
| Thread morphing... | 01/01/70 00:00 | |
PLC | 01/01/70 00:00 | |
| trivial, maybe, but why not use a 'trivial' uC | 01/01/70 00:00 | |
| Trivial microcontrollers | 01/01/70 00:00 |