past paper questions electrical circuits
... State the formula that you use, show your working and state the unit of your answer. formula working ...
... State the formula that you use, show your working and state the unit of your answer. formula working ...
power_supply_and_cables
... • Each channel is a current-mode controlled switching converter, the parallelizable module allows a “master” channel error amp to drive slave channel current control • This works for any load 0 – 100% and requires no balancing resistors (unlike some other paralleling schemes) • We would use 3, 3, an ...
... • Each channel is a current-mode controlled switching converter, the parallelizable module allows a “master” channel error amp to drive slave channel current control • This works for any load 0 – 100% and requires no balancing resistors (unlike some other paralleling schemes) • We would use 3, 3, an ...
Application Note 1724 LM5015 Isolated Two-Switch DC
... LM5015, and the regulator is implemented without using any discrete power MOSFET. A transformer winding between pins 4 and 5 of T1 is used to produce 10V Vcc for the LM5015, thus blocking the internal LDO regulator during normal operation and improving efficiency. Refer to Figure 6 for the schematic ...
... LM5015, and the regulator is implemented without using any discrete power MOSFET. A transformer winding between pins 4 and 5 of T1 is used to produce 10V Vcc for the LM5015, thus blocking the internal LDO regulator during normal operation and improving efficiency. Refer to Figure 6 for the schematic ...
Valve (Tube) Regulated Power Supplies
... ow many times have you looked standard psu with pi input filtering can the basic output voltage regulation of the for a special power supply that give a very good level of ripple rejec- capacitor input filter is better than the was better than the ordinary tion—in fact, an output for light loads, pi ...
... ow many times have you looked standard psu with pi input filtering can the basic output voltage regulation of the for a special power supply that give a very good level of ripple rejec- capacitor input filter is better than the was better than the ordinary tion—in fact, an output for light loads, pi ...
ATA1226_light loads power_FINAL
... It is important for the microcontroller to operate at maximum speed, so as to complete its task in the shortest period of time and thus draw the smallest possible aggregate amount of battery power. When the batteries providing the sensor’s power supply are freshly charged, the microcontroller can op ...
... It is important for the microcontroller to operate at maximum speed, so as to complete its task in the shortest period of time and thus draw the smallest possible aggregate amount of battery power. When the batteries providing the sensor’s power supply are freshly charged, the microcontroller can op ...
White paper - Power Factor and Input Current Distortion
... For a typical (non-corrected) switched mode power supply the apparent power factor will be approximately 0.7. However, there is no phase angle to speak of as the current and voltage are in phase. Therefore, the apparent power factor cannot be characterized as 0.7 leading or 0.7 lagging. (Note, there ...
... For a typical (non-corrected) switched mode power supply the apparent power factor will be approximately 0.7. However, there is no phase angle to speak of as the current and voltage are in phase. Therefore, the apparent power factor cannot be characterized as 0.7 leading or 0.7 lagging. (Note, there ...
Purpose: Use this simulation to observe changes that occur in a
... Discharge the capacitors by opening the bottom switch and closing the top switch. Increase the capacitance of the top capacitor. Repeat the charging process. How does the voltage drop across each capacitor compare? ...
... Discharge the capacitors by opening the bottom switch and closing the top switch. Increase the capacitance of the top capacitor. Repeat the charging process. How does the voltage drop across each capacitor compare? ...
SMV-500 - EP
... capacitor used. Especially for sudden load current changes, verify actual ripple current and make sure that allowable maximum ripple current is not to be exceeded. Note: Connect capacitors within 50mm from the output terminals +V and -V of the power module. C15: 2.2uF/100V (Ceramic Capacitor): Conne ...
... capacitor used. Especially for sudden load current changes, verify actual ripple current and make sure that allowable maximum ripple current is not to be exceeded. Note: Connect capacitors within 50mm from the output terminals +V and -V of the power module. C15: 2.2uF/100V (Ceramic Capacitor): Conne ...
SMV-500 - Astrodyne
... capacitor used. Especially for sudden load current changes, verify actual ripple current and make sure that allowable maximum ripple current is not to be exceeded. Note: Connect capacitors within 50mm from the output terminals +V and -V of the power module. C15: 2.2uF/100V (Ceramic Capacitor): Conne ...
... capacitor used. Especially for sudden load current changes, verify actual ripple current and make sure that allowable maximum ripple current is not to be exceeded. Note: Connect capacitors within 50mm from the output terminals +V and -V of the power module. C15: 2.2uF/100V (Ceramic Capacitor): Conne ...
Summary of lesson
... 1. Measure the current and voltage in this circuit by selecting one of the buttons. The one on the left is for voltage and the one on the right is for current. To measure voltage, place the two leads for voltage on top of the connections on either side of the resistor. Center the lead circles over t ...
... 1. Measure the current and voltage in this circuit by selecting one of the buttons. The one on the left is for voltage and the one on the right is for current. To measure voltage, place the two leads for voltage on top of the connections on either side of the resistor. Center the lead circles over t ...
Preview of Period 14: Electrical Safety and Transmission
... ♦ Transformers trade high voltage for low current or low voltage for high current. ♦ A step-up transformer increases the voltage and decreases the current flowing in a circuit. ♦ A step-down transformer decreases the voltage and increases the current. ♦ Transformers work only with alternating (AC) c ...
... ♦ Transformers trade high voltage for low current or low voltage for high current. ♦ A step-up transformer increases the voltage and decreases the current flowing in a circuit. ♦ A step-down transformer decreases the voltage and increases the current. ♦ Transformers work only with alternating (AC) c ...
PDF
... On the other hand, in the negative half cycle, S3 is turned on continuously. S1 and S4 commutate simultaneously at switching frequency and complementarily to S2 and S3. Current flows through S1, S5 and S4. During the negative zero voltage vector, current freewheels through S5 and antiparallel diode ...
... On the other hand, in the negative half cycle, S3 is turned on continuously. S1 and S4 commutate simultaneously at switching frequency and complementarily to S2 and S3. Current flows through S1, S5 and S4. During the negative zero voltage vector, current freewheels through S5 and antiparallel diode ...
AC Current Transducer AP-B420L I = 10 400 A I = 10 .. 400 A
... Comparative tracking index (Group I) ...
... Comparative tracking index (Group I) ...
Current source
A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.