The diode bridge, CR1-CR4 and Zener diode Z 1 provide economical temperature-compensated amplitude stabilization at ±8.5V by degenerative damping. Fig ure 20 shows the VCO's response to a ramp input. OUT 10Vsin
If a MOSFET with < 15-V VGS rating is selected, a zener diode can be used to clamp VGS to safe level, but this results in increased IQ current. To reduce the MOSFET conduction losses, lowest possible RDS(ON) is preferred, but selecting a MOSFET based on low RDS(ON) cannot be ...
Zener diode 124 regulates the voltage across capacitor 78' and potentiometer 52'. Regulation is desirable here, since 54' is a voltage controlled circuit. FIG. 6 shows the interface and master control schematics that are associated with dimmer 26' of FIG. 5. Capacitor 102', LED 24', ...
When powered from a poorly-regulated low-impedance supply, an external zener diode is recommended to prevent excessive current into VCC. The undervoltage-lockout (UVLO) condition is when VCC voltage has not yet reached the turn-on threshold or has fallen below the turn-off threshold, having ...
Although not shown, it will be appreciated that the reference voltage may be provided by a circuit utilizing a zener diode and low temperature coefficient components. The circuit may also be limited in its current driving capability, so long as a stable, direct current (DC) voltage is generated...
The manufacture and purchase of high quality motors that meet th... SM Atkin 被引量: 0发表: 2012年 SiC Zener Diode for Gate Protection of 4.5 kV SiCGT Zener voltages of the fabricated SIC Zener diodes with various nitrogen concentrations in the range from 7x10(17) to 5x10(19) cm(-3...
Diode D1 and VR1 form a clamp circuit that absorbs leakage inductance energy during normal operation, with Zener VR1 clamping the voltage to a safe level. Capacitor C2 diverts some of the leakage energy from VR1, reducing its temperature and increasing overall efficiency. After clamping, ...
comparator IC1turns off the FET gate drive through Q2. Thermal switch S1provides further protection. If Q1’s heat sink gets too hot, S1opens and disconnects the gate-drive signal. By diverting Q4’s bias voltage, transistor Q6and the zener diode prevent Q1from turning on if the −15V ...
TVS diode D2 provides input protection from transient overvoltages, while Schottky diode D12 provides output protection for the TPS22811 load switch. S2 allows U1 to be RESET or disabled. Table 2-1. TPS22811EVM Load Switch Evaluation Board Options and Setting EVM Function Channel Vin UVLO ...
The diode function is used to automatically establish the role of the leader module in the overall load-sharing system. In the system, the UCC29002 device that becomes the leader uses the load-share bus driver amplifier to drive its output-current information onto the load-share bus for all ...