Electronic Heat Detectors
... shall indicate a detector with a thermistor trouble. The detector may be reset by actuating the control panel reset switch. The vandal-resistant security locking feature shall be used in those areas as indicated on the drawings. The locking feature shall be field removable when not required. It shal ...
... shall indicate a detector with a thermistor trouble. The detector may be reset by actuating the control panel reset switch. The vandal-resistant security locking feature shall be used in those areas as indicated on the drawings. The locking feature shall be field removable when not required. It shal ...
Formulations and a Computer-Aided Test Method for the
... and IS and PS are fully operational. Below some P in threshold, GATE is activated at logic ON to enable envelope feedback and to reconfigure VAR Zm for low power impedance matching. As P in further decreases, IHC and PHC automatically turn OFF half of PS and half of IS at different thresholds, to re ...
... and IS and PS are fully operational. Below some P in threshold, GATE is activated at logic ON to enable envelope feedback and to reconfigure VAR Zm for low power impedance matching. As P in further decreases, IHC and PHC automatically turn OFF half of PS and half of IS at different thresholds, to re ...
motor protection tables
... A motor control circuit is a circuit of a control apparatus or system that carries the electric signal directing the performance of the controller (430.71). It does not carry the main power current. A control circuit tapped on the load-side of the motor branch circuit fuse which controls the motor o ...
... A motor control circuit is a circuit of a control apparatus or system that carries the electric signal directing the performance of the controller (430.71). It does not carry the main power current. A control circuit tapped on the load-side of the motor branch circuit fuse which controls the motor o ...
1. conversion of ammeter into voltmeter
... current source supplies a constant current and therefore the output voltage of tthe integrator. It is clear from above that, the output voltage increases linearly with time. The voltage comparator multivibrator is used to change state at a predetermined level on the positive slope of the integrator’ ...
... current source supplies a constant current and therefore the output voltage of tthe integrator. It is clear from above that, the output voltage increases linearly with time. The voltage comparator multivibrator is used to change state at a predetermined level on the positive slope of the integrator’ ...
The Zen Variations - Part 4
... Upping the Input Impedance The issue of increasing the input impedance of the Zen amp is a delicate one. There is no way around the need to add circuitry to accomplish this, but in the spirit of the Zen amp, we wish to do it ...
... Upping the Input Impedance The issue of increasing the input impedance of the Zen amp is a delicate one. There is no way around the need to add circuitry to accomplish this, but in the spirit of the Zen amp, we wish to do it ...
Steering Gates
... Steering Gates ◊ Digital gates can be used to control the flow of one digital signal with another. ...
... Steering Gates ◊ Digital gates can be used to control the flow of one digital signal with another. ...
Detection circuit with dummy integrator to compensate for switch
... middle plate 18 is free to move in response to an applied comprising a ?rst integrator circuit having an input and 35 force. Thus, an applied force may cause middle plate 18 an output. The input of the ?rst integrator circuit is to move towards top plate 20 or bottom plate 14 and, coupled to the inp ...
... middle plate 18 is free to move in response to an applied comprising a ?rst integrator circuit having an input and 35 force. Thus, an applied force may cause middle plate 18 an output. The input of the ?rst integrator circuit is to move towards top plate 20 or bottom plate 14 and, coupled to the inp ...
Chapter 7. ALTERNATING CURRENT
... An electric current which vary for a small finite time, while growing from zero to maximum or decaying from maximum to zero, is called a transient current. Growth of Current in an Inductor Growth of current in an inductor at any instant of time t is given by I = Io(1 – e -Rt / L) where, Io = maximum ...
... An electric current which vary for a small finite time, while growing from zero to maximum or decaying from maximum to zero, is called a transient current. Growth of Current in an Inductor Growth of current in an inductor at any instant of time t is given by I = Io(1 – e -Rt / L) where, Io = maximum ...
FEATURES: INTRODUCTION: GENERAL CIRCUIT DESCRIPTION
... The heart of the CDI Universal Evaluation board is shown in section 3. The Linear Technology LT1789-10 is a micro-powered, single source instrumentation amplifier. The gain is normally set by a single resistor, however in this circuit, two resistors are used: A fixed resistor and potentiometer. This ...
... The heart of the CDI Universal Evaluation board is shown in section 3. The Linear Technology LT1789-10 is a micro-powered, single source instrumentation amplifier. The gain is normally set by a single resistor, however in this circuit, two resistors are used: A fixed resistor and potentiometer. This ...
BP7A - L-Series IPM Interface Circuit Reference Design
... are transferred from the system controller to the IPM using high speed optocoupled transistors (IC1-IC6). To maintain noise immunity, high speed optos generally require a film or ceramic decoupling capacitor connected near their VCC and GND pins (C1-C6). The IPM’s active low control inputs are pulle ...
... are transferred from the system controller to the IPM using high speed optocoupled transistors (IC1-IC6). To maintain noise immunity, high speed optos generally require a film or ceramic decoupling capacitor connected near their VCC and GND pins (C1-C6). The IPM’s active low control inputs are pulle ...
TubeHead
... Capacitors are often marked with obscure codes that indicate their values. The 1, 2 or 3 digit number that specifies value may be preceded or followed by letters indicating such things as tolerance. If you get confused about which capacitors are which, it may help to group them by same type and chec ...
... Capacitors are often marked with obscure codes that indicate their values. The 1, 2 or 3 digit number that specifies value may be preceded or followed by letters indicating such things as tolerance. If you get confused about which capacitors are which, it may help to group them by same type and chec ...
Prof. Dr-lng. Konstantin Meyl SCALAR WAVE TECHNOLOGY
... experience its confirmation by the results of practical measurements. For the measured values in individual cases surely any auxiliary explanations would be possible, if each experiment is regarded individually, and some one is satisfied at that point already. The interpretation of the near field is ...
... experience its confirmation by the results of practical measurements. For the measured values in individual cases surely any auxiliary explanations would be possible, if each experiment is regarded individually, and some one is satisfied at that point already. The interpretation of the near field is ...
Regenerative circuit
The regenerative circuit (or regen) allows an electronic signal to be amplified many times by the same active device. It consists of an amplifying vacuum tube or transistor with its output connected to its input through a feedback loop, providing positive feedback. This circuit was widely used in radio receivers, called regenerative receivers, between 1915 and World War II. The regenerative receiver was invented in 1912 and patented in 1914 by American electrical engineer Edwin Armstrong when he was an undergraduate at Columbia University. Due partly to its tendency to radiate interference, by the 1930s the regenerative receiver was superseded by other receiver designs, the TRF and superheterodyne receivers and became obsolete, but regeneration (now called positive feedback) is widely used in other areas of electronics, such as in oscillators and active filters. A receiver circuit that used regeneration in a more complicated way to achieve even higher amplification, the superregenerative receiver, was invented by Armstrong in 1922. It was never widely used in general receivers, but due to its small parts count is used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.