# Search results

Senility?
2. ### Standard Electric Standard Electric Time Co. "Slave" Clock / very basic electronics question

Yep the 9 volt battery is way too much. I=E/R (Ohms Law). Increase E and I goes up proportionally. Increase the voltage by nine times and current will increase nine times. Since this is a DC circuit the inductance only enters the picture with the counter EMF that is generated when the circuit...
3. ### Standard Electric Standard Electric Time Co. "Slave" Clock / very basic electronics question

I agree with using a D cell battery to test the coil and the OP mentions a 1.5 volt AA battery will operate the coil. This supports the 1.5-2 volt coil at 8 to 10 ohms mentioned in the web site information I posted. Most likely the buzzers are a 24 volt parallel circuit and the secondaries...
4. ### Standard Electric Standard Electric Time Co. "Slave" Clock / very basic electronics question

It seems to me that the resistance of the coil at 10 ohms is really low and would suggest to me that there is a problem with the coil. I can't imagine a 24 volt secondary requiring 2.5 amps to operate. However I am not familiar with Standard Electric Time movements. Even IBM's 24 volt DC...
5. ### Vintage Car Clock

Since it is a quartz clock it may have it's own battery and not rely on the car battery.
6. ### Pendulum

Look at pages 6 and 7 of this rehash of the ITR Service instructions, number 222, from IBM https://www.ibm.com/ibm/history/exhibits/cc/pdf/cc_2407MCE1.pdf You may or may not have both adjusting nuts.
7. ### Mixing Synchronome & Gents slave dials

After rethinking this problem, rogerj is right. Only a parallel resistor is needed. The starting point to solving this problem for H Danials is to find the voltage developed across he coil. Therefore the DC resistance of the coil needs to be measured, with a good quality Ohm meter. Then we can...
8. ### Mixing Synchronome & Gents slave dials

rogerj's statement is correct. The voltage drops would only be the same if all series loads were the same. i.e. same model secondary or equal resistors, etc. Since the OP stated a mix of secondaries, not only different model of the same brand but of different brands and almost certainly...
9. ### IBM Clock Question/ Help

OK, So it seems that someone removed the wind coil mechanism and mainspring, then installed a 1 RPM motor to run the clock, or maybe to keep pressure on the gear train, while using the pendulum and original escapement to regulate it. You are probably on your own since this movement has been...
10. ### IBM Clock Question/ Help

Can you give us a little more information about the motor? This does not look like a weight driven movement. Are you trying to run the clock with a synchronous motor instead of using the verge and pendulum? You should find a drawing of the movement in this document...
11. ### ATO Original battery for ATO Junghans clock

Timesavers sell this battery, a number 10 and number 3 , for \$30.00. Fortunately they also they list the size of the battery so a holder can be used to hold a standard 1.5 volt D cell battery. #10 Or #3 Long Life Clock Battery #10 Or #3 Long Life Clock Battery Description: #10 or #3 battery...
12. ### Barr & Poole Poole Electric Clock Parts

Sorry to say this but, this post is 13.5 years old and he hasn't posted since January of this year. I suggest you try PMing him.
13. ### Clock Identification Help

Please do not assume it is mains voltage. That is a good way to burn up a DC coil. Most likely it is a DC circuit or low voltage AC. I hope someone jumps in with the information you need. Joe
14. ### Mixing Synchronome & Gents slave dials

I still think I'm right. I found this PDF on the Synchronome clocks that may be helpful. According to the paragraph on page 3, the “dials” require one volt each. For ballpark calculations of your resistors I suggest you measure the voltage of a movement (dial) with the correct current flowing...
15. ### Mixing Synchronome & Gents slave dials

It would be good to find the voltage drop of the slave unit requiring the highest current first. You can measure it. Then using R=E/I, E =the voltage drop, I=current requirments of that unit, R will be the total resistance for that unit (resistor + unit's resistance) at it's required current...
16. ### Mixing Synchronome & Gents slave dials

This can be a little complicated to fix. First, in a series circuit, the current is the same through each voltage drop. Also in a series circuit the sum of the individual voltage drops must equal the source voltage. (See Kirchhoff's Law) I believe in your Synchronome master clock system (if...
17. ### International Time Recorder restore thoughts appreciated

That is a cool idea. Looks great! Now all you need is a pendulum kicker to keep it swinging.
18. ### ITR slave clock power

I noticed that my last post was left in the air. So an update. I added a protection diode, a 3 amp, 1000 Peak Inverse voltage (at \$7.00 for Qty of 50) to reduce the effects of the induced Back EMF of the coil on the regulated output of the converter. This is mounted across the output of the DC...
19. ### Electric Neon Clock restoration guidance.

davefr, that tester is pretty cool. Something a fellow NAWCC poster tought me about links. You will notice in your link that there is a question mark ("?") in the link. If you delete the question mark and all after, the link is a lot shorter and will work fine. instead of all this: I...
20. ### Electric Neon Clock restoration guidance.

The transformer looks "potted", to me. Meaning it was dipped in a heated tar bath to completly soak everything; winding, steel laminations, and frame. This is a way to reduce noise or 60 Hz hum. Transformers, especially high voltage ones can make a lot of noise from the wires and laminations...
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