Depending on the model and the year it was built, Hammond tonewheel organs had different types of tone generators that differed in the number of blank tonewheels.
#TONEGENERATOR .COM GENERATOR#
Some were left perfectly round or "blank" and included on the tone generator solely to keep the gear train balanced. The pitches approximate even-tempered tuning, (it's done with integer math after all). The number of high spots on each tonewheel times the Gear Ratio of the driving and driven gears times the rotational speed of the motor determines the pitch produced by a particular tone wheel assembly. The drive shaft on the start motor side of the shaft also turns the scanner Vibrato. On some later models, a self-starting "Blue" synchronous run motor is the only motor. The start motor is mounted at the opposite end of the drive shaft from the synchronous run motor. In the original patent drawings, the organ is shown with a hand crank in the side of the organ to start the motor! Fortunately, all production models have included an AC induction Start Motor to start the organ. But AC synchronous motors are not inherently self-starting. At 60 Hz, the motor turns 1200 RPM or 20 times a second. Twenty-four driving gears times four driven gears times two tonewheels equals 24 x 4 x 2 = 96 tonewheels in nearly all tone generators (only the model X-66 used a tone generator with 12 tonewheels and derived the rest with frequency divider circuits).Īn AC Synchronous Motor is connected to one end of the drive shaft which can only run "locked" to a multiple of the the AC mains frequency of 50 or 60 Hz. Each tonewheel has a number of smooth, sine-shaped "bumps" or "teeth" and rotate adjacent to a Magnet and Coil assembly (very similar to an electric guitar pickup). Each driven gear turns a small shaft on which are mounted two Tonewheels. Meshed to each driving gear on either side of the drive shaft are two Driven Gears, 4 each of 12 different numbers of teeth. The tone generator assembly consists of a drive shaft on which are mounted 24 Driving Gears, two each of 12 different numbers of teeth. Try different locations and you will find what you are looking for.Excerpted from the Original Hammond Leslie FaqĮach tonewheel Hammond organ has a main tone generator within it, and in some cases, depending on the model, a Chorus Generator. Tone up the plumbing metal lines by attaching the device's lead into the water pipe.
Sweep the detector on the floor and wait till you hear the bit's exact location. After you drill through a wall clip the lead of the generator to the drill bit. Step 11 – Drill Bitsįind the accurate wall cavity by using this tool. The tone probe will help in isolating the telephone wire from the other wires at the junction box.
Connect the device to a telephone jack and turn it on. You can locate the telephone lines using the tone generator. If you hear a drop in the tone, that implies that the tone generator has found a break in the wiring. Use an amplifier probe to run it through the wire's path. Connect the tool to the wire you wish to trace. Step 9 – Locate BrakesĪnother use of the tone generator is to locate breaks. Clipping it to a dead wire will help you trace the path of the wire. Adjust the generator to the tone position and place the toner beside it. This tool is helpful in tracing wires to their origin. If you hear sounds that are originating from the device, then it implies that the speakers have gone bad. In case your speakers are not working all you need to do is attach this toner to the back of the faulty speaker. The toner function helps to detect any existing signals. If you find a green light, a negative source has been connected to the red lead. A lit LED conveys that the wire that is connected to the red lead is the positive one. You can determine the positive wire by looking at the LED. Take a couple of wires and establish contact with the DC Circuit. This will tone down and turn off the speaker volume. Move the switch on the device to the tone setting. Step 5 – SpeakerĪnother use of the tone generator is to test the speakers in your cars. If the resistor witnesses a waver your light will also waver accordingly. If you turn the switch to the line position, you will be able to measure the resistor. If the LED comes on, that means electricity is passing and that it is a live wire. Now take the leads and establish contact with wires. All you have to do is turn off the switch located on the top. You can check the voltage with the tone generator.
Firstly, it is a great aid for electronic equipment testing and, secondly, it acts as a testing device for informational signals that come handy when dealing with telephone systems. There are two main functions of a tone generator. A tone generator is a simple tool that is sometimes used with live and sometimes bare wires, so make sure you have taken precautions to avoid getting shocked.
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