Scientific and technological TM57FLA80 eight-bit microprocessor that introduces newly of speed ten, the procedure ROM is FLASH flash-type, the capacity is 8K Bytes, can carry on numerous programming. Adopt and simplify the instruction set, most orders are singly periodic orders, it is double-cycle orders partly to be few, instruction cycle is 2 systematic clock cycles.
This product has one pair of clock functions, the voltage range of job is 2.1V 5.5V, the operating frequency range is 32KHz 12MHz. Is the operating temperature the technical grade (- 40 C~+85 C),Antijamming capability is strong, built-in: A/D converters of No. 6 (ADC) ,The definition is 12; No. 16 is capacitive to touch the key set (Touch key) ; The 160 point more (8COM *20SEG most) LCD driver; 8 pulse width modulators (PWM) of No. 2 ; This IC offers UART and SPI serial communication interface at the same time, can realize and communication of other apparatuses.
The intersection of Model FLASH and ROM of ... Read more
Send Rui electronics corporation to announce a few days ago, as ” increased the range of product offered to the electronic design engineer ” A project part, the parent company PremierFarnell group promotes Multicomp, Pro-Power, Tenma and Duratool products stock in the Asian-Pacific area by a wide margin, the range is up to 30%. PremierFarne group will store 10,000 these four high products which trust one degree of brands, and promise to offer the quality for 12 months for 25,000 kinds of products in the world to protect.
Global economy is recovering from decline, initiate the demand for electronic element design and production of the market to increase. In order to meet electronic design engineer’s demands better, the strategic investment of PremierFarnell will be used for strengthening the stock supply especially, until the same day send, give, have most low to purchase restriction in quantity, have minimum to order volume,etc., realize the popularization... Read more
A few days ago, the instrument of Dezhou (TI) Claim to introduce the first of industry -36V low pressure drop stabilizator (LDO) . This TPS7A30 uses with positive voltage TPS7A49, can offer the overall solution that the high-accuracy analog application of support supplies power to designer. This device has extra-high power rejection ratio (RSRR) The characteristic, the output noise is low to 16uVrms. TPS7A30 generable 200 mA electric current, but TPS7A49 generable 150 mA electric current.
Senior vice-president and concurrently manager Sami Kiriaki of banking department of TI power management point out: “The customer who designs high-accuracy apparatus needs clean bipolar power supply rail to supply power for operation amplifier, analog-digital converter or digital-analogue converter. TPS7A30 and TPS7A49 can supply power for high-accuracy simulation LDO, not only contribute to meeting extensive input voltage and most low-noise requirement, and can until should to t... Read more
Ling Li belong to special company (Linear Technology Corporation) Introduce the simple and accurate low frequency clock chip LTC6991, this chip specially employs and designs regularly for the long duration. LTC6991 is the newest members of a series of TimerBloxTM general silicon timer, its integration accurate programmable Shaker and perfect circuit and logical device. An extremely wide programmable frequency domain allows the clock to the cycle operation of 9.5 hours by one 1ms. This makes LTC6991 applicable while making exposure control is counted, watchdog’s timer and periodically waking the timer up, and required assembly and work capacity are few.
LTC6991 can be set up with 1 to 3 resistors briefly, and the maximum frequency error is guaranteed less than 1.5%. LTC6991 has realized the accurate start of noiseless, first cycle (In power up Within 500 s) , and offered a kind of reset function, is used for the output pulse of cutback and exports keeping in the high... Read more
A few days ago, the instrument of Dezhou (TI) Claim to introduce the first of industry -36 V low pressure drop stabilizator (LDO) . This TPS7A30 uses with positive voltage TPS7A49, can offer the overall solution that the high-accuracy analog application of support supplies power to designer. This device has extra-high power rejection ratio (RSRR) The characteristic, the output noise is low to 16uVrms. TPS7A30 generable 200 mA electric current, but TPS7A49 generable 150 mA electric current.
Senior vice-president and concurrently manager Sami Kiriaki of banking department of TI power management point out: “The customer who designs high-accuracy apparatus needs clean bipolar power supply rail to supply power for operation amplifier, analog-digital converter or digital-analogue converter. TPS7A30 and TPS7A49 can supply power for high-accuracy simulation LDO, not only contribute to meeting extensive input voltage and most low-noise requirement, and can until should to ... Read more
A few days ago, the instrument of Dezhou (TI) Claim, introduce first industry - 36V low pressure drop stabilizator (LDO) . This TPS7A30 uses with positive voltage TPS7A49, can offer the overall solution that the high-accuracy analog application of support supplies power to designer. This device has extra-high power rejection ratio (RSRR) The characteristic, the output noise is low to 16uVrms. TPS7A30 generable 200 mA electric current, but TPS7A49 generable 150mA electric current. More details, please visit: www.ti.com/tps7A30-pr.
Senior vice-president and concurrently manager Sami Kiriaki of banking department of TI power management point out: “The customer who designs high-accuracy apparatus needs clean bipolar power supply rail to supply power for operation amplifier, analog-digital converter or digital-analogue converter. TPS7A30 and TPS7A49 can supply power for high-accuracy simulation LDO, not only contribute to meeting extensive input voltage and most low-nois... Read more
Composition, characteristic, type of a undervoltage power supply system
(1)The power supply system is usually exchanged two parts of subsystems, direct-flow subsystems to make up
It is usually made up of high pressure and undervoltage to exchange the subsystem.
The direct-flow subsystem is usually handed in Z direct-flow mapping divisions, accumulator battery parts to make up. Support and is made up of alternating load of undervoltage, direct-flow loading equipment partly. ” Support ” It says to be popular” Use the electrical equipment ” .
(2)Basic characteristic of the power supply system of undervoltage
It is a main way to improve reliability to connect the redundant way in parallel, no matter exchange the power supply system, direct-flow power supply system.
The primary power sources, for power supply system of undervoltage, it is mainly city power or generates electricity, it is a core of the power supply... Read more
The constituent company AgigA technological company comparable to Plass semi-conductive company announced a few days ago, it doesn’t need intelligence of the battery to support the electronic system to put out one, is used in the electricity and prevent the important data from being lost while cutting off. PowerGEM (the energy module of green) For the electronic system to adopt and exceed the large capacity, offer temporary energy during mains interruption.
PowerGEM module can make the artificer avoid from the battery-driven question that produces, for example environmental impact, design complicate to improve, maintain and corresponding terms, life time short and whole possessing cost getting higher. PowerGEM and AGIGARAM The corollary use of the memory module, can offer a set of intact safe and reliable non-volatile storage subsystems for data backup of the important task.
In nearest another relevant announcement, AgigA technological company announces DDR3 ... Read more
This text divides and discusses leakage inductance as being from five respects:
1,What is leakage inductance
2,Determine leakage inductance size factor;
3,Leakage inductance formula;
4,Leakage inductance absorbs the circuit structure;
5,Leakage inductance absorbing circuit losses and calculates.
Following specification:
1,What is leakage inductance
Any voltage transformer has leakage inductance, but the impact on performance index of the switching power supply of leakage inductance of the voltage transformer of the switch is very important.
Because of the existence of the voltage transformer leakage inductance of the switch, as the controlled switch will produce the back electromotive force in the broken twinkling of an eye, it is apt to puncture the overvoltage of switching element; The distributed capacitance of distributed capacitance in the all right and circuit and voltage transformer coil of leakage inductance makes up the tank circuit, m... Read more
Chinese Government promotes the policy that green technology popularizes to make the desired effect, the generating capacity of the wind-force and installed capacity of photovoltaic are heightened, is driving the rise of the green energy supplier of new generation.
Under the energetical support of government, wind power generation and market of photovoltaic solar energy of China reach the new height in 2009. The wind-powered electricity and photovoltaic are two Fructus Rhamni parvifoliae color industry of China. All in all, China green take action and have an effect recently, it is after the government makes a promise at Denmark Copenhagen World Conference on climate of December of 2009. At this meeting, Chinese Government promised, would cut down carbon discharge amount of China by about 45% on the basis of 2005 in 2020.
In order to realize this goal, China suggests liking to reduce the reliance on the coal, develop its new developing renewable energy industry at the ... Read more
