Published:2011/7/4 22:50:00 Author:Lucas | Keyword: drive circuit , bridge sensor
In the circuit, Al is the constant current output circuit, and constant value is decided by the UZ (VD1 stable voltage) and (R (RP1) + R2), and it is bridge sensor (RA-RD constitute a bridge circuit) to provide constant current bias. A2-A4 constitute an instrumentation amplifier, which can amplify the small signal output by sensor to the needed level.
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Published:2011/7/4 22:56:00 Author:Lucas | Keyword: power supply , bridge sensor
In the circuit, the maximum input voltage of A2 is ± 10V, and the + lOV reference voltage can be got by Al, and the voltage stability is decided by the regulator diode VDI. Thus, VDl uses temperature compensated voltage regulator diode 1S2192. S1 switches A2's input voltage to get different input voltages with±10V, 5V, ± 2.5 V, ±1.25 V by connecting to different resistors. A2 is the non-inverting amplifier, and the output gets positive voltage + U. ; A3 is the inverting amplifier, and the output gets negative voltage -U. ; RP2 is used to adjust the negative output voltage.
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Published:2011/6/14 2:49:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 09
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Published:2011/6/14 2:49:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 10
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Published:2011/6/14 2:49:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 11
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Published:2011/6/14 2:49:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 12
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Published:2011/6/14 2:49:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 13
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Published:2011/6/14 2:52:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 20
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Published:2011/6/14 2:49:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 14
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Published:2011/6/14 2:48:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 15
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Published:2011/6/14 2:48:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 16
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Published:2011/6/14 2:48:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 17
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Published:2011/7/5 3:57:00 Author:Lucas | Keyword: thyristor , trigger circuit , photocoupler
2-5 (a) is a half-wave circuit. Power supply can provide trigger current for the VSl by resistor R1 and transistor in the PC. The circuit is designed to limit Rl power to be as small as possible, and the current conduction angle controlling range shoule be as large as possible. VDl makes the power consumption of Rl halve, VD2 is used to limit the PC collector transistor cut-off voltage. Figure 2-5 (b) is a full-wave power. Figure 2-5 (c) is the circuit using accumulation of energy capacitor. Figure 2-5 (d) is the wide triggering pulse circuit. Trigger pulse width is lms, which can significantly reduce the power consumption of Rl and capacity of Cl.
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Published:2011/6/14 2:48:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 18
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Published:2011/6/14 2:48:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 19
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Published:2011/6/14 2:50:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 06
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Published:2011/6/14 2:47:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 05
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Published:2011/6/14 2:47:00 Author:TaoXi | Keyword: TV, remote controller
The TV remote controller 04 (View)
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Published:2011/6/14 2:47:00 Author:TaoXi | Keyword: TV, remote controller
The TV remote controller 02 (View)
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Published:2011/6/14 2:47:00 Author:TaoXi | Keyword: TV, remote controller
TV remote controller 01
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