Electric Current
... Two wires of the same length and diameter will have different resistances if they are made of different materials. This property of a material is called the resistivity. ...
... Two wires of the same length and diameter will have different resistances if they are made of different materials. This property of a material is called the resistivity. ...
Electronic Troubleshooting
... • Notice the Cap (C10) from the output to R14-R15 • It is a large cap for the AC signals that are amplified » It and the equivalent resistance have an RC time constant much larger than the period of the signal » Thus it doesn't discharge under normal operation • C10 acts as a small battery and maint ...
... • Notice the Cap (C10) from the output to R14-R15 • It is a large cap for the AC signals that are amplified » It and the equivalent resistance have an RC time constant much larger than the period of the signal » Thus it doesn't discharge under normal operation • C10 acts as a small battery and maint ...
EUP2520 Preliminary Dual Output Step-Up Converter for White LED Backlighting and OLED Display
... current is linearly proportional to the duty cycle, the PWM frequency above audible range will minimize audible noise from the inductor and/or output capacitor of the boost converter. The maximum LED current would be achieved with 100% duty cycle on PWM pin. Setting SUB Voltage Sub-display voltage i ...
... current is linearly proportional to the duty cycle, the PWM frequency above audible range will minimize audible noise from the inductor and/or output capacitor of the boost converter. The maximum LED current would be achieved with 100% duty cycle on PWM pin. Setting SUB Voltage Sub-display voltage i ...
Power Control Circuits
... Although SCRs are typically used with AC voltages, they can also be used to control DC supplies beWe have seen how bipolar transistors and MOSFETs cause they are cheaper and more efficient than trancan be used to control actuators that operate on DC sistors. In this case the SCR can be turned off by ...
... Although SCRs are typically used with AC voltages, they can also be used to control DC supplies beWe have seen how bipolar transistors and MOSFETs cause they are cheaper and more efficient than trancan be used to control actuators that operate on DC sistors. In this case the SCR can be turned off by ...
Lecture 20: Common Base Amplifier.
... 1. Low input resistance. 2. Gv is positive and can be very large, though critically dependent on Rsig. 3. From (13), if Rsig RE and RL RC , then Gi . 4. Potentially large output resistance (dependent on RC). One very important use of the CB amplifier is as a unity-gain current amplifier, whi ...
... 1. Low input resistance. 2. Gv is positive and can be very large, though critically dependent on Rsig. 3. From (13), if Rsig RE and RL RC , then Gi . 4. Potentially large output resistance (dependent on RC). One very important use of the CB amplifier is as a unity-gain current amplifier, whi ...
R es is tors - M ed iu m - to F as tR eac tin g F use
... Limiting element voltage, Umax. DC/ACRMS ...
... Limiting element voltage, Umax. DC/ACRMS ...
24-Transistor
... Fig. 1 a) The pnp transistor b) Circuit symbol c) Common emitter amplifier circuit The pnp transistor, shown in Fig. 1a) contains three distinct regions, a p-type "emitter", an ntype "base" and a p-type "collector", which together form two pn junctions. In a typical amplifier circuit, voltages are s ...
... Fig. 1 a) The pnp transistor b) Circuit symbol c) Common emitter amplifier circuit The pnp transistor, shown in Fig. 1a) contains three distinct regions, a p-type "emitter", an ntype "base" and a p-type "collector", which together form two pn junctions. In a typical amplifier circuit, voltages are s ...
Solution
... In high voltage dc applications (mainly), the diodes are connected in series with purpose to increase the reverse blocking capabilities. The difference in the i-v curve in the reverse blocking condition occurs due to manufacturing errors and tolerances, therefore each diode should carry different vo ...
... In high voltage dc applications (mainly), the diodes are connected in series with purpose to increase the reverse blocking capabilities. The difference in the i-v curve in the reverse blocking condition occurs due to manufacturing errors and tolerances, therefore each diode should carry different vo ...
AND8146/D High Current LED − Capacitive Drop Drive
... Incandescent lamps, including the tungsten−halogen type, have efficiencies of only about 4 to 10% for visible light. These emit a broad, almost continuous spectrum of energy, including not only visible light, but also ultraviolet (UV) and infrared (IR) as unusable heat. Technically, only 15 to 20% o ...
... Incandescent lamps, including the tungsten−halogen type, have efficiencies of only about 4 to 10% for visible light. These emit a broad, almost continuous spectrum of energy, including not only visible light, but also ultraviolet (UV) and infrared (IR) as unusable heat. Technically, only 15 to 20% o ...
Precision Low Dropout Linear Controllers (Rev. A)
... the on-time of the pass element, the output current is limited to a value slightly higher than the trip threshold of the duty-ratio timer. The constant-current-limit is programmable on the UC2832 to allow higher peak current during the on-time of the pass device. With duty-ratio control, high initia ...
... the on-time of the pass element, the output current is limited to a value slightly higher than the trip threshold of the duty-ratio timer. The constant-current-limit is programmable on the UC2832 to allow higher peak current during the on-time of the pass device. With duty-ratio control, high initia ...
TRIODE ELECTRONICS JCM800 2203 100W LAYOUT
... 2) Set your meter to the Highest DC volts setting (600V or higher), and put the common (ground) lead on one of the chassis mounting nuts or alligator clip it to the chassis. Touch the positive lead to Pin 3 (plate) of one of the EL34 power tube sockets. This is your Plate Voltage. Write it down. *BE ...
... 2) Set your meter to the Highest DC volts setting (600V or higher), and put the common (ground) lead on one of the chassis mounting nuts or alligator clip it to the chassis. Touch the positive lead to Pin 3 (plate) of one of the EL34 power tube sockets. This is your Plate Voltage. Write it down. *BE ...
D802A/D802AA M - 深圳市天成音电子科技有限公司
... Fig. 1 the value can be calculated from the desired peak-to-peak LED ripple current in the inductor. Typically, such ripple current is selected to be 30% of the nominal LED current. In the example given here, the nominal current ILED is 350mA The next step is determining the total voltage drop acros ...
... Fig. 1 the value can be calculated from the desired peak-to-peak LED ripple current in the inductor. Typically, such ripple current is selected to be 30% of the nominal LED current. In the example given here, the nominal current ILED is 350mA The next step is determining the total voltage drop acros ...
Data Sheet (current)
... Low Power CMOS Dual Operational Amplifier General Description The LPC662 CMOS Dual operational amplifier is ideal for operation from a single supply. It features a wide range of operating voltage from +5V to +15V, rail-to-rail output swing in addition to an input common-mode range that includes grou ...
... Low Power CMOS Dual Operational Amplifier General Description The LPC662 CMOS Dual operational amplifier is ideal for operation from a single supply. It features a wide range of operating voltage from +5V to +15V, rail-to-rail output swing in addition to an input common-mode range that includes grou ...
(AN-7) A Simple Current-Sense Technique Eliminating
... A sense resistor RS, as shown in Figure 1, is often used for the purpose of over-current protection (OCP). RS is usually a power device because it needs to handle the large current flowing through it. Therefore, it can be costly, bulky, and inefficient. Even though the RDS(ON) of the MOSFET or monit ...
... A sense resistor RS, as shown in Figure 1, is often used for the purpose of over-current protection (OCP). RS is usually a power device because it needs to handle the large current flowing through it. Therefore, it can be costly, bulky, and inefficient. Even though the RDS(ON) of the MOSFET or monit ...
TXY-001
... 2. Choose the compensation capacitor (C3) to achieve the desired phase margin. For applications with typical inductor values, setting the compensation zero, fZ1, below one-forth of the crossover frequency provides sufficient phase margin. Determine the C3 value by the following equation: ...
... 2. Choose the compensation capacitor (C3) to achieve the desired phase margin. For applications with typical inductor values, setting the compensation zero, fZ1, below one-forth of the crossover frequency provides sufficient phase margin. Determine the C3 value by the following equation: ...
Electrical Circuits Lab. 0903219 Series RLC Resonance Circuit
... * Depending on the above, we can find a formula for fr by following the steps shown below: ...
... * Depending on the above, we can find a formula for fr by following the steps shown below: ...
FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter F
... on again starting the next pulse. The converter continues these pulses until the high threshold (typical 1.6% above nominal value) is reached. A higher output voltage in PFM mode gives additional headroom for the voltage drop during a load transient from light to full load. The voltage overshoot dur ...
... on again starting the next pulse. The converter continues these pulses until the high threshold (typical 1.6% above nominal value) is reached. A higher output voltage in PFM mode gives additional headroom for the voltage drop during a load transient from light to full load. The voltage overshoot dur ...
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.