Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default looking for a simple pendulum driver circuit

I just installed a quartz battery movement into a wall clock that once had a
mechanical movement. I lost the pendulum capability and I'd like to find a
simple circuit that would move the pendulum with the same speed as in a
normal clock. I'd like to use the same pendulum the clock used before I
replaced the movement, which is 3" diameter bob and 12" long. The circuit
would be best powered from a single or double C or D batteries. Anyone have
any ideas or links?

Thank you,
Bill

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Default looking for a simple pendulum driver circuit

In article , "Bill M" wrote:

I just installed a quartz battery movement into a wall clock that once had a
mechanical movement. I lost the pendulum capability and I'd like to find a
simple circuit that would move the pendulum with the same speed as in a
normal clock. I'd like to use the same pendulum the clock used before I
replaced the movement, which is 3" diameter bob and 12" long. The circuit
would be best powered from a single or double C or D batteries. Anyone have
any ideas or links?


Try this:

http://www.sparkbangbuzz.com/els/magkick-el.htm

I built one, and it works as advertised.

Isaac
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Default looking for a simple pendulum driver circuit

On Friday, March 16, 2012 9:02:58 PM UTC-7, Bill M wrote:
I just installed a quartz battery movement into a wall clock that once had a
mechanical movement. I lost the pendulum capability and I'd like to find a
simple circuit that would move the pendulum with the same speed as in a
normal clock. I'd like to use the same pendulum the clock used before I
replaced the movement, which is 3" diameter bob and 12" long. The circuit
would be best powered from a single or double C or D batteries. Anyone have
any ideas or links?

Thank you,
Bill


Bill, you can buy quartz movements with pendulum for about $10 and they come with a pendulum stem that is cuttable to length as well as a bob.

Neil S.
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Default looking for a simple pendulum driver circuit

On Sat, 17 Mar 2012 00:02:58 -0400, "Bill M" wrote:

I just installed a quartz battery movement into a wall clock that once had a
mechanical movement. I lost the pendulum capability and I'd like to find a
simple circuit that would move the pendulum with the same speed as in a
normal clock. I'd like to use the same pendulum the clock used before I
replaced the movement, which is 3" diameter bob and 12" long. The circuit
would be best powered from a single or double C or D batteries. Anyone have
any ideas or links?

Thank you,
Bill


Check at clockparts.com

Among other things, they have a quartz pendulum movement that can
handle 17" hands and a 25" pendulum for $13(US) plus shipping.

http://cart.clockparts.com/hightorqu...ent-p-158.html
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