Figure 2 is a schematic diagram of the operation of the headphone control function. When no headphone plug is connected to the jack, the R1-R2 voltage dividing resistor makes the voltage supplied to the HP-IN pin (16 pin) approximately 50mV, and drives Amp1B and Amp2B to work. To make the HWD2163 work in bridge mode. The output coupling capacitor isolates the half supply DC voltage to protect the headphones.
The voltage at the input HP-IN pin is 4V. When the HWD2163 is operating in bridge mode, the voltage across the load is essentially 0V. Therefore, even in an ideal state, it is difficult to cause the amplifier to operate in a single-terminal output mode. Connecting the headphone jack to the headphone jack separates the headphone jack from -OUTA and connects R1 to the HP pin to VDD. In this way, the headphone off function turns off the Amp2A and Amp2B and the bridge-connected speakers do not work. The amplifier drives the headphone with the output coupling impedance of R2 and R3. When the headphone impedance is 32Ω, the output coupling impedance is R2. The effect of R3 on the output drive capability of the HWD2163 is negligible.
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Figure 2 is also a schematic diagram of the electrical connection relationship of the headphone jack. The jack is a set of three-wire plug design. The tip and the ring are respectively a signal output of the stereo two-channel, but the outermost ring is ground. When the headphones are connected, a headphone jack with a console connection is sufficient to drive the HP-IN pin. A microprocessor or switch can replace the function of the control terminal in the headphone jack. The microprocessor or switch provides 4V~VDD voltage to the HP-IN, so the bridge mode connecting the speakers stops working and the Amp1A and Amp2A drive the headphones respectively. Left and right channels.
rotary cultivators are versatile and the it used in paddy field, which is welcomed by paddy field ploughing farmers by a plurality of unique advantages. These products are of small resistance and high efficiency. In addition, the shaft sealing of these products are proper and without straw winding. Our rotary cultivator also has advantages of racing against time, saving labor, working efficiency and low cost etc. Side sooth drive, no blind area and more durable are the benefits of our products.
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Rotary Model |
1GQ-150 |
1GQ-180 |
1GQ-200 |
1GQ-230 |
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Auxiliary power kw |
36.8-51.5 |
36.8-51.5 |
51.5-65 |
51.5-65 |
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Tillage web cm |
150 |
180 |
200 |
230 |
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Tillage depth cm |
8-14 |
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Transimision model
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Side gear |
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Tractor connections |
Three suspension |
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Supporting rotary knife |
â…¡T175/IT195 |
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Rotary knife quantity |
46 |
56 |
62 |
76 |
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Tractor PTO speed r/min |
720/1000 |
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Knife shaft speed r/min |
330/460 |
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Scope |
Paddy field,plowing operation and the ridge forming drylands |
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Dimensions(length×width×height) mm |
1800×600×1050 |
2070×600×1050 |
2250×750×980 |
2580×800×1050 |
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Build quantity kg |
290 |
295 |
386 |
396 |
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PTO flower number key × outer diameter mm |
8×38 |
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If you have any questions, please contact with us directly. rotary cultivators are produced
byour company with high quality and good appearance. Welcome you can visit our factory.For
inqury,Please send mail directly to us!
Rotary Cultivator
Rotary Cultivator,Small Rotary Cultivator,Rotary Tiller Cultivator,Small Tractor Cultivator
Hunan NongFu Machinery&Electronic.Co., Ltd. , http://www.nfagmachine.com