Circuit Diagram

74 series digital circuit 74182, 74S182 advanced carry generator

Published:2011/7/19 1:47:00 Author:TaoXi | Keyword: 74 series, digital circuit, advanced, carry, generator

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Southeast Ling Sheng rear window wiper and washer electric system circuit

Published:2011/7/20 21:58:00 Author:leo | Keyword: Rear window wiper and washer, electric system

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Linear voltage-controlled oscillator(8038、μA741) circuit

Published:2011/7/20 23:31:00 Author:leo | Keyword: Linear oscillator, voltage-controlling

As the picture shows, it is a linear voltage-controlled oscillator circuit. A1 is the constant current power supply circuit used to improve C1, which ensure the linear relationship between output frequency and input controlled voltage. A2 is the sine wave output bumper. If inputting low frequency saw wave to the voltage controlled port, the circuit is changed to linear scan generator and if inputting the voltage of some signal into input port, the circuit outputs frequency-modulated wave.   (View)

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74 series digital circuit 74181, 74LS181 arithmetic logic units/function generators

Published:2011/7/19 2:40:00 Author:TaoXi | Keyword: 74 series, digital circuit, arithmetic, logic, unit, function generator

When the 74S182 or 74HC182 is used with the advanced carry circuit, it can complete the high-speed arithmetic; if this circuit's pin names are as shown in the pin table, it can compatible with the high or low effective data; this circuit can be used as the comparator, the A=B output is the collector electrode's open circuit.   (View)

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Crossed flash circuit

Published:2011/7/16 3:39:00 Author:leo | Keyword: Crossed flash

In order to get different colors, we divideLEDs into two lines horizontally and two lines vertically. And we use two kinds of colors of LED to make it come true. LM324(IC1) is the center of saw tooth oscillator circuit while IC2 and IC3 are the center of comparator, whose referring voltage is gotten through resistance series R13 to R20.And VR1 is used to adjust the referring voltage value of comparator A4 to A10.   (View)

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74 series digital circuit 74180, 74HC180 9-bit parity generator/checker

Published:2011/7/19 2:42:00 Author:TaoXi | Keyword: 74 series, digital circuit, 9-bit, parity, generator, checker

74 series digital circuit 74180, 74HC180 9-bit parity generator/checker   (View)

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74 series digital circuit 74178, 74179 4-bit parallel accessing shift register

Published:2011/7/19 2:49:00 Author:TaoXi | Keyword: 74 series, digital circuit, 4-bit, parallel, accessing, shift, register

74 series digital circuit 74178, 74179 4-bit parallel accessing shift register   (View)

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74 series digital circuit 74176 presetable decimal counter

Published:2011/7/19 2:55:00 Author:TaoXi | Keyword: 74 series, digital, presetable, decimal counter

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74 series digital circuit 74175, 74LS175 quad D-type trigger (with the clear port)

Published:2011/7/19 2:58:00 Author:TaoXi | Keyword: 74 series, digital circuit, quad, D-type, trigger, clear port

74 series digital circuit 74175, 74LS175 quad D-type trigger (with the clear port)   (View)

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74 series digital circuit 74174, 74LS174 six D-type trigger (with the clear port)

Published:2011/7/19 3:01:00 Author:TaoXi | Keyword: 74 series, digital circuit, six D-type, trigger, clear port

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74 series digital circuit 74173, 74LS173 4-bit D-type registers (three states)

Published:2011/7/19 3:05:00 Author:TaoXi | Keyword: 74 series, digital circuit, 4-bit, D-type, register, three states

74 series digital circuit 74173, 74LS173 4-bit D-type register (three states) If the M or N is in the high state, the output is disabled to the high impedance state; but the operating of the timing sequence will not be influenced.   (View)

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74 series digital circuit 74172 multi-port register array (three states)

Published:2011/7/19 3:10:00 Author:TaoXi | Keyword: 74 series, digital circuit, multi-port, register, array, three states

Independent reading and writing addresses can read and write at the same time; every address uses the 2-bit 8-word structure and the three-state output.   (View)

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74 series digital circuit 74170, 74LS170 4×4 register arrays (OC)

Published:2011/7/19 3:18:00 Author:TaoXi | Keyword: 74 series, digital circuit, 4×4, register arrays, OC

1024 words: the open-collector output; the 74LS670 is similar with this circuit, but the 74LS670 is the three-state output. The reading and writing addresses are separated, so the reading and writing can be operated at the same time; the storage time typical value is 20ns to form the 4-bit 4-word (can be expanded to n-bit).   (View)

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74 series digital circuit 74LS375 4-bit bistable D-type latch

Published:2011/7/15 4:28:00 Author:TaoXi | Keyword: 74 series, digital circuit, 4-bit, bistable, D-type, latch

The 74LS375 and 74HC375 4-bit bistable D-type latches has the same electrical performance and function with the 74LS75. The difference between them is the different pin arrangement.   (View)

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Southeast Ling Sheng Room Lamp and baggage compartment lamp electric system circuit

Published:2011/7/20 20:37:00 Author:leo | Keyword: Room Lamp, baggage compartment lamp

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74 series digital circuit 74LS353,74F353 dual 4 to 1 data selectors

Published:2011/7/15 4:33:00 Author:TaoXi | Keyword: 74 series, digital circuit, dual, 4 to 1, data selector

The 74LS353, 74F373, 74ALS353 and 74HC353 dual 4 to 1 data selectors are as shown: The selective input A and B are the common parts.   (View)

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74 series digital circuit 74LS348, 8-3 wire priority encoder (three states)

Published:2011/7/15 4:36:00 Author:TaoXi | Keyword: 74 series, digital circuit, 8-3 wire, priority encoder, three states

The 74LS348, 8-3 wire priority encoder (three states) The 8 data lines will be encoded as 3-wire binary system (octonary number system).   (View)

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74 series digital circuit 74LS260, 74S260 dual 5-input NOR gates

Published:2011/7/15 4:39:00 Author:TaoXi | Keyword: 74 series, digital circuit, dual 5-input, NOR gate

The 74LS260, 74S260 dual 5-input NOR gates are as shown in the figure:   (View)

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74 series digital circuit 74HC239 dual 2-4 lines decoders/demultiplexers

Published:2011/7/15 4:43:00 Author:TaoXi | Keyword: 74 series, digital circuit, dual, 2-4 lines, decoders, demultiplexers

The 74HC239 dual 2-4 lines decoders/demultiplexers:   (View)

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74 series digital circuit 74HC238,74HCT238 3-8 decoder/demultiplexers

Published:2011/7/15 4:42:00 Author:TaoXi | Keyword: 74 series, digital circuit, 3-8, decoder, demultiplexer

The 74HC238,74HCT238 3-8 decoder/demultiplexers   (View)

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