LECTURE 4
... generated with the RC or LC oscillator circuit. However, because of difficulties with amplitude and frequency stability, particularly at very low frequencies, oscillators with a sine wave as the primary output are ...
... generated with the RC or LC oscillator circuit. However, because of difficulties with amplitude and frequency stability, particularly at very low frequencies, oscillators with a sine wave as the primary output are ...
Extending the MFJ-927 to 160-Meters
... In the “Reviews” section of this website I reviewed the CG-3000, MFJ-927, and the SG230 auto-tuners specifically for use with the popular 43-foot vertical antenna. As discussed in that review only the SG-230 had enough internal inductance to tune the 43foot vertical on 160 meters, so I described an ...
... In the “Reviews” section of this website I reviewed the CG-3000, MFJ-927, and the SG230 auto-tuners specifically for use with the popular 43-foot vertical antenna. As discussed in that review only the SG-230 had enough internal inductance to tune the 43foot vertical on 160 meters, so I described an ...
13.3 Section Review and Problems File
... 8. A digital camera uses one 6 V battery. The circuit that runs the flash and takes the pictures has a resistance of 3 ohms. What is the current in the circuit? Looking for: Solution: Given: Equation: 9. The motor in a toy car has a resistance of 3 ohms and needs 1.5 amperes of current to run ...
... 8. A digital camera uses one 6 V battery. The circuit that runs the flash and takes the pictures has a resistance of 3 ohms. What is the current in the circuit? Looking for: Solution: Given: Equation: 9. The motor in a toy car has a resistance of 3 ohms and needs 1.5 amperes of current to run ...
PPT
... • Since a hair or dust particle can damage circuitry during manufacture, chips are created in climate-controlled "clean rooms" ...
... • Since a hair or dust particle can damage circuitry during manufacture, chips are created in climate-controlled "clean rooms" ...
J44094650
... and an easily divisible clock source for the internal hardware timers. This high frequency clock source is used to control the sequencing of CPU instruction ...
... and an easily divisible clock source for the internal hardware timers. This high frequency clock source is used to control the sequencing of CPU instruction ...
AC Line Regen Module Specification
... Nema Type 1 Metal Enclosure (Reduces EMI) Micro Processor Based Digital Control Circuitry Surface Mount Printed Circuit Boards Latest Generation IGBT Power Devices Customer Inputs - Module Enable and Module Reset (jumpered for most applications) Customer Output – Regen Module On – Form C Dry Contact ...
... Nema Type 1 Metal Enclosure (Reduces EMI) Micro Processor Based Digital Control Circuitry Surface Mount Printed Circuit Boards Latest Generation IGBT Power Devices Customer Inputs - Module Enable and Module Reset (jumpered for most applications) Customer Output – Regen Module On – Form C Dry Contact ...
Current Chopping a Simple Explanation, and Calculations to
... Current chopping is a term that came to our vocabulary with the advent of vacuum switching which was commercially started back in the 1950’s. Earlier switching means in air or oil are in terms of dielectric recovery rate relatively slow and as the main contacts would part the arc would go through s ...
... Current chopping is a term that came to our vocabulary with the advent of vacuum switching which was commercially started back in the 1950’s. Earlier switching means in air or oil are in terms of dielectric recovery rate relatively slow and as the main contacts would part the arc would go through s ...
Impulse voltage and harmonic voltage distortion tests for the
... A ‘PROTEC Z’ unit was subjected to the following tests: • Application of a fast voltage transient (0.5 µs rise time) with a maximum peak of 3 kV. • Voltage harmonic distortion for 3rd, 5th, 7th, 10th and 15th harmonic of 50 Hz, while keeping the voltage constant at 40 V. Each phase was tested and th ...
... A ‘PROTEC Z’ unit was subjected to the following tests: • Application of a fast voltage transient (0.5 µs rise time) with a maximum peak of 3 kV. • Voltage harmonic distortion for 3rd, 5th, 7th, 10th and 15th harmonic of 50 Hz, while keeping the voltage constant at 40 V. Each phase was tested and th ...
Icar - Dacpol
... In conflict with this we are faced with the fact that any semiconductor device is essentially a switch, and switching a DC gives square waves. In fact the great efficiency of modern inverters it is mainly due to the fact that last generation of semiconductors (like IGBT) switches very quickly from t ...
... In conflict with this we are faced with the fact that any semiconductor device is essentially a switch, and switching a DC gives square waves. In fact the great efficiency of modern inverters it is mainly due to the fact that last generation of semiconductors (like IGBT) switches very quickly from t ...
hf + 6 m linear amplifier
... power, up to 100 milliseconds duration of drive spikes, drive RF “tails” after a PTT or KEY release, operator’s inadvertent tuning errors etc. The amplifier also will not cease to function with a “soft” AC mains and will deliver more than half power at only 85% of nominal mains voltage. It can withs ...
... power, up to 100 milliseconds duration of drive spikes, drive RF “tails” after a PTT or KEY release, operator’s inadvertent tuning errors etc. The amplifier also will not cease to function with a “soft” AC mains and will deliver more than half power at only 85% of nominal mains voltage. It can withs ...
protection_from_ligh..
... • Use at building entrance, Power panel, Equipment power input • Not suited for data transmission lines because of large capacitance • Main issue: – Pick continuous voltage to pass normal supply voltage. – MOV clamping voltage should protect user equipment – The MOV should be protected from as many ...
... • Use at building entrance, Power panel, Equipment power input • Not suited for data transmission lines because of large capacitance • Main issue: – Pick continuous voltage to pass normal supply voltage. – MOV clamping voltage should protect user equipment – The MOV should be protected from as many ...
LECTURE 2 Two Major Uses of Power Electronics: Motor Control
... lighting which together constitute over 75% of electricity use. ...
... lighting which together constitute over 75% of electricity use. ...
Modified Inverting Amplifier
... more easily grasped by considering the equivalent circuit of the op-amp shown in Figure 1b. The input and output terminals are circuit nodes, and v1, v2, and vo are considered to be node voltages measured with respect to ground. An op-amp is a very complex device, but the purpose of that complexity ...
... more easily grasped by considering the equivalent circuit of the op-amp shown in Figure 1b. The input and output terminals are circuit nodes, and v1, v2, and vo are considered to be node voltages measured with respect to ground. An op-amp is a very complex device, but the purpose of that complexity ...
Buck converter
A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.