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- Path: sparky!uunet!dtix!oasys!plumpe
- From: plumpe@oasys.dt.navy.mil (David Plumpe)
- Newsgroups: rec.models.rc
- Subject: Re: Standard RC Servo Data
- Message-ID: <24669@oasys.dt.navy.mil>
- Date: 8 Sep 92 11:52:54 GMT
- References: <1992Sep8.014436.1739@ncsu.edu>
- Reply-To: plumpe@oasys.dt.navy.mil (David Plumpe)
- Organization: Carderock Division, NSWC, Bethesda, MD
- Lines: 17
-
- In rec.models.rc, ddm@hamby.tx.ncsu.edu (David Mann) writes:
- >Can anyone tell me what voltage a standard servo (rc type) uses? I want
- >to use servos for a project i'm building, but can't find any specs in my
- >mound of RC books, manuals, etc. The servos are only 3 wires so i guess
- >i need voltage and pulse time, any info would be appreciated...
- >
- 4.8 volts. Actually, its four NiCad cells, so the voltage varies
- somewhat under load and with how much charge is left - generally between
- 4 and 5.4 volts. Current drain when driving a load can be fairly high
- - maybe in the 1/2 amp range (?).
- Yes, the three wires are Ground, +4.8, and Signal. Signal is a
- positive-going pulse (travels from ground to +4.8 and back) with a width
- between 0.5 and 1.5 millisec, and repeated roughly every 25 ms. Either
- LSTTL or CMOS logic should be able to drive them; I've used both.
- Have fun!
-
- DaveP
-