An Alternating Magnetic Field System for Tracking
... such as the ones on the upper lip and upper incisors could come within 1 cm. of one another, it is necessary to avoid distortion of measurements which could result from interactions between adjacent transducers. This requirement dictates that transducers do not resonate, possibly generating large en ...
... such as the ones on the upper lip and upper incisors could come within 1 cm. of one another, it is necessary to avoid distortion of measurements which could result from interactions between adjacent transducers. This requirement dictates that transducers do not resonate, possibly generating large en ...
BD00HC5MEFJ-M
... (2). Connecting the power supply connector backward Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external direction diode can be added. (3). Power supply lines Design PCB layout pattern to provide low impedance GND and ...
... (2). Connecting the power supply connector backward Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external direction diode can be added. (3). Power supply lines Design PCB layout pattern to provide low impedance GND and ...
UBA20261/2 600 V and 350 V power IC for step dimmable CFLs
... state, the frequency sweeps down on the CI pin due to capacitor CCI charging at a fixed current as shown in Figure 4. During this continuous decrease in frequency, the circuit approaches the resonant frequency of the resonant tank (L2, C5). This action causes a high voltage across the lamp to ignite ...
... state, the frequency sweeps down on the CI pin due to capacitor CCI charging at a fixed current as shown in Figure 4. During this continuous decrease in frequency, the circuit approaches the resonant frequency of the resonant tank (L2, C5). This action causes a high voltage across the lamp to ignite ...
LT3952 - 60V LED Driver with 4A Switch Current
... The input current sense amplifier reduces the switching current in the case of an overload. VC is reduced when the IVINP-IVINN voltage exceeds the 60mV built-in potential. Tie IVINP-IVINN across an external sense resistor to set auxiliary current limit. If unused, tie to VIN. IVINP (Pin 6): Auxiliar ...
... The input current sense amplifier reduces the switching current in the case of an overload. VC is reduced when the IVINP-IVINN voltage exceeds the 60mV built-in potential. Tie IVINP-IVINN across an external sense resistor to set auxiliary current limit. If unused, tie to VIN. IVINP (Pin 6): Auxiliar ...
6010a/11a/12a/15a service manual
... service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before touching components. DO NOT SER ...
... service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before touching components. DO NOT SER ...
Oscillators
... Where do you need such high stability of frequency of oscillations ? Instead of an inductor, it uses a crystal of quartz, tourmaline, or Rochelle salt. Piezoelectric effect. The crystal is suitably cut and then mounted between two metallic plates. The fundamental frequency is given as ...
... Where do you need such high stability of frequency of oscillations ? Instead of an inductor, it uses a crystal of quartz, tourmaline, or Rochelle salt. Piezoelectric effect. The crystal is suitably cut and then mounted between two metallic plates. The fundamental frequency is given as ...
GFA-5500 service manual - Music Electronics Forum
... 3. Move the transformer leads so they are configured as shown in figure 2. 4. Change the rear panel AC fuse from 6A to 12A, AGC. Place a sticker on the rear panel at the fuse holder to show the new value fuse (12A) and new value operating voltage (120VAC). 5. Test the unit with a 120VAC source. Whit ...
... 3. Move the transformer leads so they are configured as shown in figure 2. 4. Change the rear panel AC fuse from 6A to 12A, AGC. Place a sticker on the rear panel at the fuse holder to show the new value fuse (12A) and new value operating voltage (120VAC). 5. Test the unit with a 120VAC source. Whit ...
Power Supply with Programmable Output
... During an OC event, the PTC fuse changes from a low-resistance to a high resistance. Therefore, the PTC fuse protects the load (or the power supply) from OC. However, the PTC fuse's OC limit depends on the temperature. Also, the PTC fuse response time to switch to high impedance (off-state) is typic ...
... During an OC event, the PTC fuse changes from a low-resistance to a high resistance. Therefore, the PTC fuse protects the load (or the power supply) from OC. However, the PTC fuse's OC limit depends on the temperature. Also, the PTC fuse response time to switch to high impedance (off-state) is typic ...
Intrinsic Safety Circuit Design
... These are passive devices that prevent all excess energy from a fault occurring on the safe side from reaching the hazardous area. Under normal conditions, the barriers allow the circuit to function properly by allowing the signals to pass between the field device and the control room. In a fault co ...
... These are passive devices that prevent all excess energy from a fault occurring on the safe side from reaching the hazardous area. Under normal conditions, the barriers allow the circuit to function properly by allowing the signals to pass between the field device and the control room. In a fault co ...
Antenna
... As antennas radiate in space often several curves are necessary to describe the antenna. If the radiation of the antenna is symmetrical about an axis (as is the case in dipole, helical and some parabolic antennas) a unique graph is sufficient. • Each antenna supplier/user has different standards as ...
... As antennas radiate in space often several curves are necessary to describe the antenna. If the radiation of the antenna is symmetrical about an axis (as is the case in dipole, helical and some parabolic antennas) a unique graph is sufficient. • Each antenna supplier/user has different standards as ...
THE `IEC` ELECTRONICS KIT
... Means Alternating Current. This is current that flows both forward and backwards following a sine wave waveform. AC does not have a + and - polarity so red and black terminal and wire colours are usually not used. AMPLIFIER: An amplifier is an electronic circuit that changes a small signal of curren ...
... Means Alternating Current. This is current that flows both forward and backwards following a sine wave waveform. AC does not have a + and - polarity so red and black terminal and wire colours are usually not used. AMPLIFIER: An amplifier is an electronic circuit that changes a small signal of curren ...
AN3172
... considerable amount of ripple at twice the mains frequency. Because the VFF signal is fed into the multiplier the excessive ripple causes distortion of the current reference resulting in high THD and poor PF. On the other hand, if the time constant is set too large there is a considerable delay in s ...
... considerable amount of ripple at twice the mains frequency. Because the VFF signal is fed into the multiplier the excessive ripple causes distortion of the current reference resulting in high THD and poor PF. On the other hand, if the time constant is set too large there is a considerable delay in s ...
Metal-layer capacitors in the 65nm CMOS process and the
... MOS capacitor, metal–insulator–metal (MIM) capacitor, and metal–oxide–metal (MOM) capacitor. Among those capacitors, because of thin gate oxide structure, MOS capacitor has the highest capacitance density per unit area. However, due to the disadvantages of non-linearity, higher temperature coefficien ...
... MOS capacitor, metal–insulator–metal (MIM) capacitor, and metal–oxide–metal (MOM) capacitor. Among those capacitors, because of thin gate oxide structure, MOS capacitor has the highest capacitance density per unit area. However, due to the disadvantages of non-linearity, higher temperature coefficien ...
Winding Capacitance and Leakage Inductance
... Keeping turns to a minimum will keep the capacitance to a minimum. This capacitance can be separated into four categories: (1) capacitance between turns; (2) capacitance between layers; (3) capacitance between windings; and (4) stray capacitance. The net effect of the capacitance is normally seen by ...
... Keeping turns to a minimum will keep the capacitance to a minimum. This capacitance can be separated into four categories: (1) capacitance between turns; (2) capacitance between layers; (3) capacitance between windings; and (4) stray capacitance. The net effect of the capacitance is normally seen by ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""