9 V to 36 Vin dc, Constant Current LED Driver
... period) charging inductor L1 from input Vin. When Q1 and Q2 turn off, diodes D1 and D2 deliver inductor energy to output Vout. For the inductor flux (volt microsecond) to remain in equilibrium after each switching cycle, Vin*D*Ts must equal Vout*(1-D)*Ts, neglecting circuit losses. Hence voltage gai ...
... period) charging inductor L1 from input Vin. When Q1 and Q2 turn off, diodes D1 and D2 deliver inductor energy to output Vout. For the inductor flux (volt microsecond) to remain in equilibrium after each switching cycle, Vin*D*Ts must equal Vout*(1-D)*Ts, neglecting circuit losses. Hence voltage gai ...
EUP3409 Dual 1.5MHz, 800mA Synchronous Step-Down Converter
... using PWM comparator. The duty cycle is controlled by three weighted differential signals: the output of error amplifier, the main switch sense voltage and the slope-compensation ramp. It modulates output power by adjusting the inductor-peak current during the first half of each cycle. An N-channel, ...
... using PWM comparator. The duty cycle is controlled by three weighted differential signals: the output of error amplifier, the main switch sense voltage and the slope-compensation ramp. It modulates output power by adjusting the inductor-peak current during the first half of each cycle. An N-channel, ...
AD633 Low Cost Analog Multiplier Data Sheet (REV. E)
... The AD633 is a functionally complete, four-quadrant, analog multiplier. It includes high impedance, differential X and Y inputs and a high impedance summing input (Z). The low impedance output voltage is a nominal 10 V full scale provided by a buried Zener. The AD633 is the first product to offer th ...
... The AD633 is a functionally complete, four-quadrant, analog multiplier. It includes high impedance, differential X and Y inputs and a high impedance summing input (Z). The low impedance output voltage is a nominal 10 V full scale provided by a buried Zener. The AD633 is the first product to offer th ...
New Product Current Regulators Simplify the Driving of LEDs
... constant current regulators provide a simple means of driving low-power LED strings. Target applications are those that benefit from the improved efficiency, flexibility and longer life offered by LEDs as an emerging lighting source. Supporting adjustable currents from 10mA to 350mA allows for platf ...
... constant current regulators provide a simple means of driving low-power LED strings. Target applications are those that benefit from the improved efficiency, flexibility and longer life offered by LEDs as an emerging lighting source. Supporting adjustable currents from 10mA to 350mA allows for platf ...
capacitively coupling, single supply, current sources
... R the current doesn’t depend on RL adjustable current if R is replaced with a resistance in series with a potentiometer the current of the source can be modified by modifying vI – voltage controlled current source none of RL terminals can be connected to the ground, therefore we have a float ...
... R the current doesn’t depend on RL adjustable current if R is replaced with a resistance in series with a potentiometer the current of the source can be modified by modifying vI – voltage controlled current source none of RL terminals can be connected to the ground, therefore we have a float ...
MASTER INSTRUMENT CORPORATION SINGLE-PHASE BRIDGE RECTIFIER RB151 THRU RB157
... l High isolation voltage from case to leads l High temperature soldering guaranteed: 260 oC/10 second, at 5 lbs. (2.3kg) tension. ...
... l High isolation voltage from case to leads l High temperature soldering guaranteed: 260 oC/10 second, at 5 lbs. (2.3kg) tension. ...
The Field Effect Transistor
... Redo the circuit replacing the computer-generated voltages with a power supply for VDD and a signal generator for the variable input voltages as shown in Figure 3. Choose a value of Rs to give the following circuit a good operating point. For a good operating point, the drain voltage is between 3 an ...
... Redo the circuit replacing the computer-generated voltages with a power supply for VDD and a signal generator for the variable input voltages as shown in Figure 3. Choose a value of Rs to give the following circuit a good operating point. For a good operating point, the drain voltage is between 3 an ...
Xmedia_ELab1_FadingLED
... • Do this on your own. • Build this circuit. • Measure the voltage across each branch. • Measure the current out of the battery and before each LED. ...
... • Do this on your own. • Build this circuit. • Measure the voltage across each branch. • Measure the current out of the battery and before each LED. ...
Designing with a New Family of Instrumental Amplifiers, Design
... precision. Gain error and drift are extremely low for all units, and the single supply capability of the LTC1100 and LT1101 is noteworthy. The classic application for these devices is bridge measurement. Accuracy requires low drift, high common mode rejection and gain stability. Figure 3 shows a typ ...
... precision. Gain error and drift are extremely low for all units, and the single supply capability of the LTC1100 and LT1101 is noteworthy. The classic application for these devices is bridge measurement. Accuracy requires low drift, high common mode rejection and gain stability. Figure 3 shows a typ ...
CIRCUIT FUNCTION AND BENEFITS CIRCUIT DESCRIPTION
... The AD8603 is configured as a subtractor so that it can reject the 5 V common-mode voltage and amplify the signal of interest, IS × RS. The signal is amplified by a factor of 20 to span the 2.5 V full-scale input range of the AD7453 ADC. A fullscale 2.5 V signal to the ADC corresponds to a current ...
... The AD8603 is configured as a subtractor so that it can reject the 5 V common-mode voltage and amplify the signal of interest, IS × RS. The signal is amplified by a factor of 20 to span the 2.5 V full-scale input range of the AD7453 ADC. A fullscale 2.5 V signal to the ADC corresponds to a current ...
smith_wangaDAC2
... • High Quality Audio Applications – Accurate Reproduction [16 bit] – Low Noise ...
... • High Quality Audio Applications – Accurate Reproduction [16 bit] – Low Noise ...
141 EBI100C Electrical Bio-Impedance Amplifier The EBI100C
... measurement frequencies, from 12.5kHz to 100kHz. For operation, the EBI100C connects to four unshielded electrode leads terminating in Touchproof sockets. The EBI100C is typically used with EL500 paired disposable electrodes, but can function with spot or ring electrodes, reusable electrodes, or nee ...
... measurement frequencies, from 12.5kHz to 100kHz. For operation, the EBI100C connects to four unshielded electrode leads terminating in Touchproof sockets. The EBI100C is typically used with EL500 paired disposable electrodes, but can function with spot or ring electrodes, reusable electrodes, or nee ...
HVLED805 – one-chip solution for LED driving
... applications, such as incandescent bulb retrofits. The PWM is a current-mode controller IC specifically designed for zerovoltage switching (ZVS) flyback LED drivers, with constant output current (CC) regulation using primary-sensing feedback. This eliminates the need for the secondary voltage refere ...
... applications, such as incandescent bulb retrofits. The PWM is a current-mode controller IC specifically designed for zerovoltage switching (ZVS) flyback LED drivers, with constant output current (CC) regulation using primary-sensing feedback. This eliminates the need for the secondary voltage refere ...
Power supply/ /signal converter ZSP
... 0 ÷ 20 mA, 0 ÷ 10 V, 0 ÷ 20 V) and converts it, through a separation system into an output signal. An additional input line may be connected to any two-wire transmitter to provide it with a 19 ÷ 24 V. The device is typically used to provide galvanic separation between the measurement circuits instal ...
... 0 ÷ 20 mA, 0 ÷ 10 V, 0 ÷ 20 V) and converts it, through a separation system into an output signal. An additional input line may be connected to any two-wire transmitter to provide it with a 19 ÷ 24 V. The device is typically used to provide galvanic separation between the measurement circuits instal ...
A LED Exercise
... Note on powers of ten and units: Remember that in V = IR if I is in mA and R in kΩ then V will be in volts as the milli and kilo cancel each ...
... Note on powers of ten and units: Remember that in V = IR if I is in mA and R in kΩ then V will be in volts as the milli and kilo cancel each ...
File
... The relationship between Resistance (R), current intensity (I) & potential difference (V). ...
... The relationship between Resistance (R), current intensity (I) & potential difference (V). ...
review suggestions - Montana State University
... The voltmeter will indicate a positive voltage if its “+” (red) input is connected to a higher voltage than its “-“ (black) input. Voltage can be measured without having to change the circuit. The ammeter will indicate a positive current if the circuit causes current to flow into the “+” (red) termi ...
... The voltmeter will indicate a positive voltage if its “+” (red) input is connected to a higher voltage than its “-“ (black) input. Voltage can be measured without having to change the circuit. The ammeter will indicate a positive current if the circuit causes current to flow into the “+” (red) termi ...
Wilson current mirror
A Wilson current mirror is a three-terminal circuit (Fig. 1) that accepts an input current at the input terminal and provides a ""mirrored"" current source or sink output at the output terminal. The mirrored current is a precise copy of the input current. It may be used as a Wilson current source by applying a constant bias current to the input branch as in Fig. 2. The circuit is named after George R. Wilson, an integrated circuit design engineer who worked for Tektronix. Wilson devised this configuration in 1967 when he and Barrie Gilbert challenged each other to find an improved current mirror overnight that would use only three transistors. Wilson won the challenge.