P6B
... LDRs and thermistors You should be able to recognise the circuit symbols for the thermistor and the LDR (light-dependent resistor), and know how the resistance of these components can be changed. The thermistor Thermistors are used as temperature sensors, for example, in fire alarms. Their resistanc ...
... LDRs and thermistors You should be able to recognise the circuit symbols for the thermistor and the LDR (light-dependent resistor), and know how the resistance of these components can be changed. The thermistor Thermistors are used as temperature sensors, for example, in fire alarms. Their resistanc ...
Lecture 9: Electric Current
... 1. Find the equivalent resistance for any parallel combinations in the circuit, and replace the combination with its equivalent. The circuit is now a series circuit. 2. Redraw the SERIES circuit. 3. Find the total resistance of the series circuit. 4. Redraw the circuit. 5. Use Ohm’s Law to calculate ...
... 1. Find the equivalent resistance for any parallel combinations in the circuit, and replace the combination with its equivalent. The circuit is now a series circuit. 2. Redraw the SERIES circuit. 3. Find the total resistance of the series circuit. 4. Redraw the circuit. 5. Use Ohm’s Law to calculate ...
Series and Parallel Circuit Worksheet
... 3. A string of fifty 15 ohm Christmas tree lights are connected in series. One burns out, they all burn out. Calculate the total resistance. 4. Calculate the total resistance for two 180 ohm resistors connected in parallel. 5. A 10 ohm, 20 ohm, and 100 ohm resistors are connected in parallel. Calcul ...
... 3. A string of fifty 15 ohm Christmas tree lights are connected in series. One burns out, they all burn out. Calculate the total resistance. 4. Calculate the total resistance for two 180 ohm resistors connected in parallel. 5. A 10 ohm, 20 ohm, and 100 ohm resistors are connected in parallel. Calcul ...
Basic Electrical Understanding
... The Amp “I” • So Current is the flow…the flow of water • Current (I) is equivalent to the flow rate, and the resistance is like the pipe size. • Increase the pressure, more water comes out of the hose. • Increase the diameter of the hose and more water comes out of the hose ...
... The Amp “I” • So Current is the flow…the flow of water • Current (I) is equivalent to the flow rate, and the resistance is like the pipe size. • Increase the pressure, more water comes out of the hose. • Increase the diameter of the hose and more water comes out of the hose ...
SOLAR CELL TESTING
... A solar cell is a diode and hence an IV curve of a solar cell under dark conditions will look similar to that of a diode. When illuminated, the photons interact with the material to generate electron hole pairs, which are then driven in opposite directions by the built-in potential. ...
... A solar cell is a diode and hence an IV curve of a solar cell under dark conditions will look similar to that of a diode. When illuminated, the photons interact with the material to generate electron hole pairs, which are then driven in opposite directions by the built-in potential. ...
RC Circuit
... capacitor and hence no voltage drop across it. All of the potential drop is across the resistor – maximum current. As charge builds up on the capacitor the current will “slow down” – there will be a smaller drop across the resistor and hence less current. ...
... capacitor and hence no voltage drop across it. All of the potential drop is across the resistor – maximum current. As charge builds up on the capacitor the current will “slow down” – there will be a smaller drop across the resistor and hence less current. ...
Chapter 18
... connected end-to-end, they are said to be in series The current is the same in all resistors because any charge that flows through one resistor flows through the other The sum of the potential differences across the resistors is equal to the total potential difference across the ...
... connected end-to-end, they are said to be in series The current is the same in all resistors because any charge that flows through one resistor flows through the other The sum of the potential differences across the resistors is equal to the total potential difference across the ...
130 In One Electronics Lab Tutorial
... There is a small, black cone shaped piece in your supplies. This cone limits the amount of light that can get to the LED and allows you to see how much light it is giving off. Place this cone over the LED while testing the effects of different resistors. ...
... There is a small, black cone shaped piece in your supplies. This cone limits the amount of light that can get to the LED and allows you to see how much light it is giving off. Place this cone over the LED while testing the effects of different resistors. ...
Constant Current Power Supplies
... emitter follower with a voltage gain of unity. Both the DC power source and transistor can be replaced by a single op amp which has a DC output capability equal to the combination. The resulting circuit can be redrawn in the form of a simple non-inverting op amp. The op amp is considered an ideal am ...
... emitter follower with a voltage gain of unity. Both the DC power source and transistor can be replaced by a single op amp which has a DC output capability equal to the combination. The resulting circuit can be redrawn in the form of a simple non-inverting op amp. The op amp is considered an ideal am ...
linear circuit analysis
... • Source transformation techniques are also applicable in circuits with dependent sources but we should avoid tempering controlling signals. ...
... • Source transformation techniques are also applicable in circuits with dependent sources but we should avoid tempering controlling signals. ...
feeder ammeter clear test
... with a number of work sites, dozens of grounds can be put in place over the length of the feeder. When the maintenance or upgrade work is completed, all of these grounds must be accounted for and removed. Failure to remove even one of these grounds before the feeder circuit is reenergized can result ...
... with a number of work sites, dozens of grounds can be put in place over the length of the feeder. When the maintenance or upgrade work is completed, all of these grounds must be accounted for and removed. Failure to remove even one of these grounds before the feeder circuit is reenergized can result ...
In this new setup, the current flowing across the Pt100/polysilicon...
... In this new setup, the current flowing across the Pt100/polysilicon resistor (green line in Figure 142) was not monitored through a PC-DAC input as before (see p.157), but forced instead using a precision ultralow offset voltage (25 µV) OP07-EP operational amplifier (Analog Devices). In essence, a v ...
... In this new setup, the current flowing across the Pt100/polysilicon resistor (green line in Figure 142) was not monitored through a PC-DAC input as before (see p.157), but forced instead using a precision ultralow offset voltage (25 µV) OP07-EP operational amplifier (Analog Devices). In essence, a v ...
RLC Circuit SP222
... position 1, charging the capacitor. Push the RUN/STOP button on the oscilloscope. You should see the word ”Ready” at the top center of the display. Shift the switch smoothly to position 2. After a moment, several cycles of the measured inductor voltage should appear on the screen and “Ready” should ...
... position 1, charging the capacitor. Push the RUN/STOP button on the oscilloscope. You should see the word ”Ready” at the top center of the display. Shift the switch smoothly to position 2. After a moment, several cycles of the measured inductor voltage should appear on the screen and “Ready” should ...
Multimeter
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A multimeter or a multitester, also known as a VOM (Volt-Ohm meter or Volt-Ohm-milliammeter ), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance. Analog multimeters use a microammeter whose pointer moves over a scale calibrated for all the different measurements that can be made. Digital multimeters (DMM, DVOM) display the measured value in numerals, and may also display a bar of a length proportional to the quantity being measured. Digital multimeters are now far more common but analog multimeters are still preferable in some cases, for example when monitoring a rapidly varying value. A multimeter can be a hand-held device useful for basic fault finding and field service work, or a bench instrument which can measure to a very high degree of accuracy. They can be used to troubleshoot electrical problems in a wide array of industrial and household devices such as electronic equipment, motor controls, domestic appliances, power supplies, and wiring systems.Multimeters are available in a wide range of features and prices. Cheap multimeters can cost less than US$10, while laboratory-grade models with certified calibration can cost more than US$5,000.