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By adjusting the oscillators so their frequencies are very nearly the same, the difference between them is made audible as a beat note. This beat note changes slightly when the search loop is moved over or near to a...
A thermistor is utilized in the circuit for heat sensing, while two 5K variable resistors are incorporated to calibrate the circuit for activating the relay at the desired temperature. The inclusion of a 1N4007 diode across the relay serves...
The roles of capacitors C1, C4, and C5 in a circuit may not be immediately clear. Capacitors on the power rail help to smooth out the signal by reducing current ripple, which can be observed using an oscilloscope. Resistors...
The gear lathe is unloaded from the stop line as depicted in the figure. When the turning clutch is in the stop position, the limit switch XWK is disengaged, which immediately powers the AC contactor coil C to stop...
A sequential timer circuit device is utilized in various applications for initializing conditions during start-up or for activating test signals in sequences, such as in test equipment devices. The circuit diagram below illustrates a sequencer circuit with potential applications...
This is a simple low-level noise maker that is ideally suited for certain alarm applications. When the sounder is located in another part of the building, the sound level is loud enough to be heard but is not loud...
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