Joule Thief – Detailed Construction
... hand winding of the transformer and produce magnetic flux. This flux cuts the turns of the left‐hand winding and produces a voltage that adds to the voltage produced by the battery. This increases the current into the base of the transistor and the transistors turns on more. This continues and th ...
... hand winding of the transformer and produce magnetic flux. This flux cuts the turns of the left‐hand winding and produces a voltage that adds to the voltage produced by the battery. This increases the current into the base of the transistor and the transistors turns on more. This continues and th ...
KI eChem Methods_ApplicationsAppNote
... Potentiometry involves measuring the potential between two electrodes, typically a working electrode and a reference electrode. The potential difference is measured using a high impedance voltmeter or an electrometer, so that any current flow will be negligible (i=0). Potentiometry is used for appli ...
... Potentiometry involves measuring the potential between two electrodes, typically a working electrode and a reference electrode. The potential difference is measured using a high impedance voltmeter or an electrometer, so that any current flow will be negligible (i=0). Potentiometry is used for appli ...
DS600CLSA
... Unit is powered and secondary circuit is open or interrupted Both DC and AC primary current up to 100% of nominal value can be applied to the current transducers in the above situations without damage to the electronics. Please notice that the sensor core can be magnetized in all above cases, leadin ...
... Unit is powered and secondary circuit is open or interrupted Both DC and AC primary current up to 100% of nominal value can be applied to the current transducers in the above situations without damage to the electronics. Please notice that the sensor core can be magnetized in all above cases, leadin ...
Introduction - EECG Toronto
... jitter. Jitter is a variation of the excess phase in time. It is highly undesirable because it shortens the eyediagram and lowers the time available for logic computation. Second, the VCO should have large tuning range. Depending on the application, the PLL may be required to output wide range of os ...
... jitter. Jitter is a variation of the excess phase in time. It is highly undesirable because it shortens the eyediagram and lowers the time available for logic computation. Second, the VCO should have large tuning range. Depending on the application, the PLL may be required to output wide range of os ...
B0045 - Zeus 3A Switching Regulator Data Sheet B0045
... The output voltage can be adjusted by 100th of a volt increments. When adjusting the output voltage apply input power. Use a standard multi meter connected to VCC on the 3 pin header. Set the multi meter to DC. As the potentiometer is turned you will see the voltage increase or decrease. Go slowly g ...
... The output voltage can be adjusted by 100th of a volt increments. When adjusting the output voltage apply input power. Use a standard multi meter connected to VCC on the 3 pin header. Set the multi meter to DC. As the potentiometer is turned you will see the voltage increase or decrease. Go slowly g ...
AD628 High Common-Mode Voltage, Programmable Gain
... voltages, it allows simple conversion of standard control voltages or currents for use with single-supply ADCs. A wideband feedback loop minimizes distortion effects due to capacitor charging of Σ-Δ ADCs. A reference pin (VREF) provides a dc offset for converting bipolar to single-sided signals. The ...
... voltages, it allows simple conversion of standard control voltages or currents for use with single-supply ADCs. A wideband feedback loop minimizes distortion effects due to capacitor charging of Σ-Δ ADCs. A reference pin (VREF) provides a dc offset for converting bipolar to single-sided signals. The ...
UM0674
... Figure 6 shows the schematic of the converter. The device uses an internal P-channel DMOS transistor, with a typical RDS(on) of 250 mΩ as switching element to avoid the use of a bootstrap capacitor, and guarantees high efficiency. An internal oscillator fixes the switching frequency at 250 kHz to mi ...
... Figure 6 shows the schematic of the converter. The device uses an internal P-channel DMOS transistor, with a typical RDS(on) of 250 mΩ as switching element to avoid the use of a bootstrap capacitor, and guarantees high efficiency. An internal oscillator fixes the switching frequency at 250 kHz to mi ...
Driving LEDs with a PIC Microcontroller
... The multiplexer can be digitally controlled by the microcontroller. Each LED is assigned an address which allows it to be selected by the PIC, in order to determine the current passing through the diode for current regulation or to assist in failure recognition. ...
... The multiplexer can be digitally controlled by the microcontroller. Each LED is assigned an address which allows it to be selected by the PIC, in order to determine the current passing through the diode for current regulation or to assist in failure recognition. ...
Chapter 5 Signal Encoding Techniques
... —Conversion of analog data into digital data —Digital data can then be transmitted using NRZ-L —Digital data can then be transmitted using code other than NRZ-L —Digital data can then be converted to analog signal —Analog to digital conversion done using a codec —Pulse code modulation —Delta modulat ...
... —Conversion of analog data into digital data —Digital data can then be transmitted using NRZ-L —Digital data can then be transmitted using code other than NRZ-L —Digital data can then be converted to analog signal —Analog to digital conversion done using a codec —Pulse code modulation —Delta modulat ...
CCD2700A CCD Image Sensor 8064 x 8064 Element Image Area
... Charge Coupled Device (CCD) imaging sensor. This CCD is intended for use in high-resolution scientific, space based, industrial, and commercial electrooptical systems. The CCD2700A is organized in two halves each containing an array of 8064 horizontal by 4032 vertical pixels. The CCD2700A may be ope ...
... Charge Coupled Device (CCD) imaging sensor. This CCD is intended for use in high-resolution scientific, space based, industrial, and commercial electrooptical systems. The CCD2700A is organized in two halves each containing an array of 8064 horizontal by 4032 vertical pixels. The CCD2700A may be ope ...
Series-Parallel Circuits
... unless the firing area is clear. • Disconnect the power from a panel before anyone enters the firing area, even if you believe that all devices have been fired. – After the Show, until the Lead Operator says so, the Crew stays out of the Firing Area. The Public STAYS out. ...
... unless the firing area is clear. • Disconnect the power from a panel before anyone enters the firing area, even if you believe that all devices have been fired. – After the Show, until the Lead Operator says so, the Crew stays out of the Firing Area. The Public STAYS out. ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.