Published:2011/4/27 3:30:00 Author:Rebekka | Keyword: mono-order generator
Using LM386 as mono-order generator circuit diagram is shown as above. (View)
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Published:2011/4/27 3:29:00 Author:Rebekka | Keyword: single-chip radio
Using KD-28 as single-chip radio circuit diagram is shown as above. (View)
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Published:2011/4/27 3:28:00 Author:Rebekka | Keyword: single-chip radio
Using LM386 as single-chip radio circuit diagram is shown as above. (View)
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Published:2011/4/27 3:17:00 Author:Nicole | Keyword: Mitsubishi Pagerlo, light off-road vehicle, outline
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Published:2011/4/27 3:28:00 Author:Nicole | Keyword: TOYOTA COASTER, coach, radiator fan, condenser fan
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Published:2011/4/26 22:19:00 Author:Ecco | Keyword: 555, Optical , toy car
As shown in Figure 11-2, IC (555) is connected as dual stable trigger. RG1, RG2 are photoresistors, which are packed in the car's left window and right window (or front and back), when the RG1 is suffered illumination, its resistance declines sharply, pin 6 is in high level, 555 resets, pin 3 is in low level, the motor M reversing and turning right; or turning left. (View)
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Published:2011/4/27 3:25:00 Author:Nicole | Keyword: TOYOTA COASTER, coach, combined meter
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Published:2011/4/27 3:18:00 Author:Nicole | Keyword: Mitsubishi Pagerlo, light off-road vehicle, outline
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Published:2011/4/27 2:15:00 Author:Rebekka | Keyword: Toyota Coaster , bus engine
Toyota Coaster bus engine circuit diagram is shown as above. (View)
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Published:2011/4/27 3:07:00 Author:Rebekka | Keyword: German Desheng, radio circuit
Using CXA1191 German Desheng radio circuit diagram is shown as above. (View)
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Published:2011/4/27 3:13:00 Author:Nicole | Keyword: Mitsubishi Pagerlo, light off-road vehicle, outline
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Published:2011/4/27 3:05:00 Author:Rebekka | Keyword: FM transmitter, high-frequency amplifier
88MHz-108MHz 15W FM transmitter high-frequency amplifier circuit diagram is shown as above. (View)
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Published:2011/4/27 3:03:00 Author:Rebekka | Keyword: FM wireless headset
FM wireless headset circuit diagram is shown as above. (View)
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Published:2011/4/27 3:02:00 Author:Rebekka | Keyword: FM transmitter
80mW FM transmitter circuit diagram is shown as above. (View)
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Published:2011/4/27 3:09:00 Author:Nicole | Keyword: Mitsubishi Pagerlo, light off-road vehicle, fusible link
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Published:2011/4/27 3:00:00 Author:Rebekka | Keyword: Single-tube radio, transmitter circuit
Single-tube radio transmitter circuit diagram is shown as above.
Note: The launch transistor uses the 9018.
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Published:2011/4/27 3:01:00 Author:Nicole | Keyword: Mitsubishi Pagerlo, light off-road vehicle, multifunction fuse
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Published:2011/4/27 3:06:00 Author:Nicole | Keyword: Mitsubishi Pagerlo, light off-road vehicle, special fuse
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Published:2011/4/27 2:35:00 Author:Ecco | Keyword: 555 , Inductive , switching , power supply
As shown in Figure 9-27, 555 and R1, R2, C1 form an astable multivibrator, the oscillation frequency is about 10kHz, duty cycle closes to 50%. VT2, VT3 are used as the switching tube to expand the current. When the shock wave is in high level, VT2, VT3 are conducted to discharge for LC ; when it is in low level, the energy storage in L provides power for load through the freewheeling diode loop. When overvoltage, DW is punctured, VT1 is saturated conducted, C is in low level, so that 555 resets and stops vibration, it plays the role of regulation and homeostasis.
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Published:2011/4/27 2:18:00 Author:Ecco | Keyword: 555 , special power supply , razor
As shown in Figure 9-34, the power circuit is composed of AC step-down rectifier circuit and DC voltage conversion circuit. It is used for 1.5V ~ 4.5V razors sold in general market. 555 and R1, R2, RP1, D5, C2 etc. form an astable multivibrator, the oscillation frequency is decided by the charging and discharging time constant. If the potentiometer RP1 uses 33kΩ multi-turn potentiometer, the oscillation frequency is about 800HZ, adjusting RP1 can change the output waveform duty cycle, the duty cycle is large while the output voltage of the emitter of VT1 pipe is low. The using effect is the criterion.
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