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LM137/LM337 3-Terminal Adjustable Negative Regulators
LM137/LM337 3-Terminal Adjustable Negative Regulators

... The LM137/LM337 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of −1.5A over an output voltage range of −1.2V to −37V. These regulators are exceptionally easy to apply, requiring only 2 external resistors to set the output voltage and 1 output capacitor for freq ...
Mechanical Design Notes
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... minimize the loss of energy in the plastic material. On the other hand, the thickness of the plastic should not be too small (or the color of the plastic too light) in order to avoid being able to see inside the appliance. In contrast to other products that have a shiny external metal shielding, the ...
Zirconia Oxygen Sensor Testing
Zirconia Oxygen Sensor Testing

... power at the sensor, corresponding to this, air may be sucked into the exhaust system between exhaust pulses due to negative pressure, further contaminating the reading. 4. Be aware that a restricted exhaust may effect O2 readings. Pre-test conditions: Single wire, Run engine at 2000 R.P.M. for 3 mi ...
Resistance - Physics | Oregon State University
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CSMIO-MPG® v1
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... When designing a complete control system , you should draw attention to all issues, so that the entire system does not pose any hazard during use. Pay special attention to the emergency stop circuit. The control system must be designed in such a way that when you press the emergency stop mushroom, t ...
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Pumptec Pump Protector Manual
Pumptec Pump Protector Manual

... Figure 4: Time-out and Trip Sensitivity Settings 8. The factory underload setting of 70% should not require any adjustment. 9. Wire in alarm circuit, if desired. 10. Replace cover and secure cover screw. 11. Turn AC power back on. ...
ST NE556
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Series wiring means that the devices are connected in such a way
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... in parallel have an ac voltage of 6.00 V. The main speaker resistance is 8.00 Ω, the remote speaker resistance is 4.00 Ω. Determine (a) the equivalent resistance of the two speakers, (b) the total current supplied by the receiver, (c) the current in each speaker. ...
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... a. Square wave inverters. These are the simplest type of inverters, which generates a symmetrical square wave, usually based on a high frequency Dc-Dc converter. b. Sine wave inverters. These are more complicated than the square wave inverter. A common method is to generate a 50Hz sine wave which is ...
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HMC586LC4B 数据资料DataSheet下载

... are excellent over temperature due to the oscillator’s monolithic construction. The Vtune port accepts an analog tuning voltage from 0 to +18V. The HMC586LC4B VCO operates from a single +5V supply, consumes only 55 mA of current, and is housed in a RoHS compliant SMT package. This wideband VCO uniqu ...
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A Novel Low-Power CMOS Operational Amplifier with High Slew
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... utilizing a capacitive load of 5 pF, a 30 MHz unity gain frequency and consumes 2.8 mW from a 2.5 V power supply. Conclusion: The proposed chip, which is the first available CMOS operational amplifier in Jordan as the authors are aware, is well-suited to low-voltage applications since it does not re ...
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... topology of the power converter of the regenerative drives uses two identical bridges in the rectifier and inverter stage, connected through a dc-link bus with a small capacitor connected across it, and is usually known as a Voltage back-toback converter (Fig.1) [1-3].The Direct topology to achieve ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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