Published:2011/6/21 5:07:00 Author:Christina | Keyword: infrared, emission, encoding, integrated circuit
The BA5048 is designed as one kind of multi-channel infrared emission encoding integrated circuit which is produced by the ROHM company, and it can be used in the remote control transmitter of the AV power amplifiers such as the TianYi AD-51OOA power amplifier.
1.Features
The BA5048 is composed of the key pulse generating circuit, the key coding circuit, the clock oscillating circuit, the test circuit, the carrier signal amplifier circuit and other subsidiary function circuits.
2.Pin functions
The BA5048 is in the 16-pin dual-row DIP plastic package, the pin functions and data are as shown in table 1.
Table 1 The pin functions and data of the BA5048
3.Typical application circuit
The remote control transmitter typical application circuit which is composed of the BA5048 is as shown in figure 1.
Figure 1 The typical application circuit of BA5048
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Published:2011/6/23 21:55:00 Author:Seven | Keyword: power supply, converter
TDA2030 is an efficient computing amplifier. With its complementary input stage, we can convert the single pole power supply into two dual pole power supplies that the low-power circuits need.
In the circuit, the resistors of R1 and R2 with the same resistance compose a voltage distributor which makes the upper and lower part have the same voltage. The central point of the distributor is connected with the non-inverting phase input terminal of the amplifier, and the op-amp is assembled into a voltage follower which makes the LEV of O' and O terminal the same. And O' is a vain point, so it has to be separated from the power supply.
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Published:2011/6/24 7:31:00 Author:Christina | Keyword: digital, audio, video, processing, integrated circuit
The AV1428 is designed as one kind of digital audio and video processing integrated circuit that is produced by the Panasonic company, it can be used in various brands of DAD, VCD players such as the WanLiDa and the Desay series.
1.Features
The AV1428 is composed of the NTSC/PAL digital video coding circuit, three 9-bit video DAC and PLL clock synchronous circuits, the audio DAC and audio digital processing circuit. It can be used to change the decompressed video data code signal into the video signal, and it changes the audio data into the analog audio signal.
2.Pin functions and data
The AV1428 uses the 100-pin square package, the pin functions and data are as shown in table 1.
Table 1 The pin functions and data of the AV1428
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Published:2011/6/21 1:01:00 Author:Christina | Keyword: remote control, transmitter, integrated circuit
The BA5104 is designed as one kind of remote control transmitter integrated circuit that is produced by the Toyo company, and it can be used in various types of remote control transmitters.
1.Pin functions and data
The BA5104 integrated circuit is in the 16-pin dual-row DIP package, the pin functions and data is as shown in table 1.
Table 1 The pin functions and data of the BA5104
2.Typical application circuit
The typical application circuit of the remote controller which is composed of the BA5104 is as shown in figure 1.
Figure 1 The typical application circuit of the remote controller which is composed of the BA5104
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Published:2011/6/23 22:09:00 Author:Seven | Keyword: color TV, remote control
Figure: The color TV remote control 20 circuit (View)
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Published:2011/6/23 22:19:00 Author:Seven | Keyword: high frequency, infrared, stereo headphone
The high frequency infrared harmonic stereo headphone circuit is shown as above. (View)
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Published:2011/6/23 22:14:00 Author:Seven | Keyword: color TV, remote control
Figure: The color TV remote control circuit (19) (View)
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Published:2011/6/23 22:16:00 Author:Seven | Keyword: transistor diode, bridge rectifier
The transistor diode bridge rectifier circuit is shown as above.
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Published:2011/6/24 7:20:00 Author:Christina | Keyword: digital, video, coding, integrated circuit
The AV3169 is designed as one kind of digital video coding integrated circuit that is produced by the Panasonic company, and it can be used in various brands of DAD, VCD players.
The AV142 integrated circuit is composed of the clock oscillating circuit, the digital video processing circuit, the I(2)C bus interface circuit, the bright color processing circuit.etc. It uses the 44-pin square package, the pin functions and data are as shown in table 1.
Table 1 The pin functions and data of the AV142
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Published:2011/6/23 22:20:00 Author:Seven | Keyword: transistor diode, full-wave rectifier
The transistor diode full-wave rectifier circuit is shown as above.
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Published:2011/6/22 8:19:00 Author:Robert | Keyword: IC, Typical, Application
The K5S7C2616B is a communication single-chip micro-computer IC which is mainly used as the mobile phone control microprocessor in the cordless telephone.
The KS57C2616B IC's internal part is made up of CPU which is used to control many kinds of commmand signals' input and output, FSK decoding circuit, many kinds of command signals receiving and detecting circuit and resending circuit, and signal path selection circuit, system clock oscillation circuit, transmitting and receiving static double tone/pulse dialing selecting circuit, ring signal detection circuit, indicator light control, LCD liquid crystal display decoder driving circuit and so on.
The comtrol circuit's typical application circuit composed of K5S7C2616B IC is shown in the pictrue.
The picture shows the KS57C2616B IC's typical application circuit. (View)
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Published:2011/6/24 4:05:00 Author:Seven | Keyword: stereo sound, valve power, amplifier
The stereo sound valve power amplifier circuit is shown as above.
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Published:2011/6/23 22:21:00 Author:Seven | Keyword: color TV, remote control
Figure: The color TV remote control circuit (18) (View)
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Published:2011/6/23 7:29:00 Author:Christina | Keyword: 0~30V, continuous, adjustable, voltage stabilizer
The 0~30V continuous adjustable voltage stabilizer circuit is as shown in the figure. In the figure, the RP1 is not connected with the ground directly, but it is connected with the potential which is lower than -1.25V. The R3 and VD2 of the circuit supply the -1.3V negative voltage reference, so the circuit can continuously adjust from 0V.
0~30V continuous adjustable voltage stabilizer circuit (View)
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Published:2011/6/24 3:03:00 Author:Seven | Keyword: double purpose, desk lamp
The figured lamp circuit can not only casually regulate the light, but also has the function of timing and putting out the light, which consists of the thyristor light regulating circuit and thyristor time delay circuit, two parts in total.
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Published:2011/6/24 3:25:00 Author:Seven | Keyword: 3-pole valve, regulated circuit
The dual 3-pole valve regulated circuit is shown as above.
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Published:2011/6/24 2:42:00 Author:Seven | Keyword: low current, regulated valve
The low current regulated valve circuit is shown in the figure.
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Published:2011/6/24 2:55:00 Author:Seven | Keyword: non-stage, regulated, sunlight lamp
The non-stage regulated sunlight lamp circuit is shown in the figure, which consists of the regulated circuit, high frequency oscillator and filament transformer. The regulated circuit consists of the two-way thyristor VTH, two-way trigger diode VDH and the resistance-capacitance phase-drifting circuit. By regulating the potentiometer, the conducting angle of the thyristor VTH can be changed, which makes the DC voltage on the two terminals of the sunlight lamp change, so that the aim to regulate the light of the lamp is achieved. VT1 must be the Ge intermediate triode of 3AX818 type, β≥60, Iceo would better be low.
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Published:2011/6/25 10:49:00 Author:John | Keyword: alarm system
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Published:2011/6/25 10:47:00 Author:John | Keyword: Anti-lock
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