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crowbar

Catalog Datasheet MFG & Type PDF Document Tags

ALTERNATOR REGULATOR 14v

Abstract: CAR ALTERNATOR REGULATOR used in telecommunication. This concept is named CROWBAR protection. Fig. 6 : CLAMPING / CROWBAR characteristics CLAMPING CROWBAR I I I PP IPP IH IBO VBR VCL V 4/11 ® VT VBR VBO V APPLICATION NOTE CLAMPING / CROWBAR COMPARISON - The CLAMPING devices suppress all , by the couple IPP, VCL. - The CROWBAR devices act by short circuiting the line during the surge , figure 7 the CROWBAR protection device can be compared to a switch. - Before the surge the switch is
STMicroelectronics
Original
LDP24 ALTERNATOR REGULATOR 14v CAR ALTERNATOR REGULATOR car alternator surge zener alternator rectifier alternator alternator circuit diagram AN837/0895

CAR ALTERNATOR REGULATOR

Abstract: zener alternator rectifier CROWBAR protection. Figure 6. CLAMPING / CROWBAR characteristics CLAMPING CROWBAR I I IPP , / CROWBAR COMPARISON ­ The CLAMPING devices suppress all overvoltages reaching the knee of the curve (VBR). During the surge suppression the working point is defined by the couple IPP, VCL. ­ The CROWBAR devices , point is defined by the couple IPP, VT. As shown in figure 7 the CROWBAR protection device can be , the dissipated power is low too. ­ After the surge, when the current through the CROWBAR device goes
STMicroelectronics
Original
AN1969 Alternator regulator alternator diode alternator rectifier CAR ALTERNATOR VOLTAGE REGULATOR alternator rectifier protection

SCR Applications Handbook

Abstract: AN-789 crowbar. The charge to be crowbarred would be Q = CV = IT, the energy, E= 1/2 CV2, and the peak surge , crowbars seems like a straightforward relatively simple task. The crowbar SCR is selected so as to handle , Energy Has To Be Crowbarred? This is dictated by the power supply filter capacitors, which are a function , (M) MOTOROLA AN-789 Semiconductor Products Inc. Application Note CHARACTERIZING THE SCR FOR CROWBAR APPLICATIONS Prepared by Al Pshaenich Senior Applications Engineer The use of a crowbar to protect sensitive
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OCR Scan
AN568 SCR Applications Handbook crowbar motorola an569 dc voltage regulator circuit using SCR scr FULL WAVE REGULATOR MC14011B 1N914 MJE803 MJE250 AN569

crowbar

Abstract: HC4016 crowbars. Normally connected to EXT, a high will crowbar the I/O. 0510.00Rev0 All data sheets are , side with Crowbar. IO2 7 Input I/O switch input for signal 2. 0510.00Rev0 D , for signal 2. Protected side with Crowbar. IO3 9 Input I/O switch input for signal 3. IO3P 10 Output I/O switch output for signal 3. Protected side with crowbar. IO4 11 , . Protected side with Crowbar. IO5 13 Input I/O switch input for signal 5. IO5P 14 Output
Space Electronics
Original
LPT001RP HC4016 LPT 26 pin to 39 Q68-02

fuse thyristor

Abstract: : Overvoltage at the output may damage the power supply! Crowbar Switching regulators (except PSR, PSA) can be provided with a thyristor crowbar. (Option C) The thyristor crowbar acts as a protection against internally , currents. The current rating of a thyristor crowbar is limited, e.g.: ISC = 8 A PSB case B02 PSC, PSL case , PSS units, when the crowbar option is used with two or more power supplies in parallel, all crowbar trigger terminals (C) should be interconnected. This ensures all crowbar circuits trigger simultaneously
Power-One
Original
fuse thyristor LM339 LM336 1N4148 BZX79C12

RC firing circuit FOR SCR

Abstract: crowbar circuit www.fairchildsemi.com Application Bulletin AB-17 Adding an Over-Voltage Crowbar to an RC5051 Converter: Design and Analysis Summary 1. Adding an over-voltage crowbar circuit to an RC5051 , high-performance crowbar are shown and their operation explained. The high-side MOSFET, Q1, fails short , Crowbar A crowbar circuit must be designed to clamp the output voltage of a converter when the voltage , the crowbar must respond in the shortest possible time. To some extent, these requirements conflict
Fairchild Semiconductor
Original
1N4735A RC431A RC firing circuit FOR SCR crowbar circuit SCR firing converter circuit SCR gate drive circuit LM393 crowbar 4 pin SCR gate drive circuit AB00000017

mc3525

Abstract: MC1723 reset the SCR crowbar. Otherwise, the power supply, accross which the SCR is connected, must be shut down to reset the crowbar. If a non current-limited supply is used, a fuse or circuit breaker, F1t , semiconductor sensing circuitry and SCR crowbar devices used in DC poser supply OVER-UNDER VOLTAGE PROTECTION , choose the "crowbar" sensing circuit technology". This system senses the overvoltage condition, and quickly "crowbar" or short circuit the supply, forcing the -'jppiy into current limiting or open-g the
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MC1723 mc3525 MC1723 pin configuration SCR Crowbar 2n6507 application circuits inverter scr firing board AN004E/D AN004E

siemens 230 gas discharge tube

Abstract: gas surge protector siemens (zeners) an overvoltage or one that clips the overvoltage and then crowbars the energy. A crowbar device , suppressors clip voltage and then crowbar energy after their zener threshold voltage is achieved. When , then crowbars energy after their spark-over threshold is exceeded. There are various techniques , . At threshold voltage, crowbar protectors pull the transient voltage low keeping the voltage , . Another important difference between a clamp and a crowbar suppressor when placed directly across an SSR
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Original
P1300EA70 P3100EA70 siemens 230 gas discharge tube gas surge protector siemens siemens 350 gas discharge tube SIEMENS GAS DISCHARGE TUBES P3000AA61 MOV SUPPRESSOR S14K115 J--90 J--11 CU4032K50G CU4032K75G CU4032K95G

mc3525

Abstract: MC1723 pin configuration , may be used to reset the SCR crowbar. Otherwise, the power supply, across which the SCR is connected, must be shut down to reset the crowbar. If a non­current­limited supply is used, a fuse or circuit , sensing circuitry and SCR crowbar devices used in DC power supply over/under voltage protection schemes , ) circuitry to prevent disasters. ON Semiconductor chose the "crowbar" sensing circuit technology. This system senses the overvoltage condition, and quickly "crowbars" or short circuits the supply, forcing
ON Semiconductor
Original
the light activated scr scr 2n6508 2N6504 dc circuit breaker using SCR inverter scr firing board 2n6506 scr firing METHODS

2N2573 SCR

Abstract: dc circuit breaker using SCR increased in value. The switch, S1, shown in Figure 3 may be used to reset the crowbar. Otherwise, the power supply, across which the SCR is connected, must be shut down to reset the crowbar. If a non , MOTOROLA SEMICONDUCTOR! TECHNICAL DATA MC3423 MC3523 Overvoltage Crowbar Sensing Circuit , transients or regulator failures when used in conjunction with an external "crowbar" SCR. They sense the overvoltage condition and quickly "crowbar" or short circuit the supply, forcing the supply into current
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2N2573 MCR81-5 2N2573 SCR pin configuration transistor 2n6505 MOTOROLA SCR SCR inverter charging control circuit MC3423/3523 MC3523/3423 2N6400 T0220 2N1842

661 OPTO

Abstract: movs suppressors clip voltage and then crowbar energy after their zener threshold voltage is achieved. When , diodes. Gas Discharge Tubes: The miniature microgap gas tube clips voltage and then crowbars energy , device that clamps (zeners) an overvoltage or one that clips the overvoltage and then crowbars the energy. A crowbar device is necessary when the desired operating voltage approaches the SSR's maximum load voltage rating. At threshold voltage, crowbar protectors pull the transient voltage low keeping
Infineon Technologies
Original
P1500EA70 P2400AA61 SGT27B13 P2500AA61 661 OPTO movs Harris Semiconductor TRANSIENT SURGE SUPPRESSOR ac ssr MOSFET SSR MOV surge on AC mains TPB100A TPA100A J--80 V82ZA12 TPB150A

MC3423D

Abstract: MCR81-5 can be increased in value. The switch, S 1, shown in Figure 3 m ay be used to reset the crowbar. Otherwise, the power supply, across which the SCR is connected, must be shut down to reset the crowbar. If a , MOTOROLA SEMICONDUCTOR! TECHNICAL DATA MC3423 MC3523 Overvoltage Crowbar Sensing Circuit , transients or regulator failures w hen used in conjunction with an external "crowbar" SCR. They sense the overvoltage condition and quickly "crowbar" or short circuit the supply, forcing the supply into current
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MC3423D mc3423p1 MC3423U Motorola SCR power inverter application Note C3423/3523 2N681 MCR3935-1

SCR PIN CONFIGURATION

Abstract: 3 pin SCR PIN CONFIGURATION in Figure 2. The switch, S1, shown in Figure 1 may be used to reset the SCR crowbar. Otherwise, the power supply, across which the SCR is connected, must be shut down to reset the crowbar. If a non , OM9Q26ST ISOLATED HERMETIC TO-257AA OVERVOLTAGE CROWBAR CIRCUIT Three Term inal, O vervoltage , Package Integrated Circuit Controller SCR Crowbar Supply Voltages From 4.5V To 36.0V Positive Or Negative , the control circuit and crowbar SCR as a complete unit. MAXIMUM RATINGS Differential Power Supply
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SCR PIN CONFIGURATION 3 pin SCR PIN CONFIGURATION OM9026ST OM9Q26

sgs-thompson

Abstract: GE Transient Voltage Suppression and then crowbars the energy. A crowbar device is necessary when the desired operating voltage approaches the SSR's maximum load voltage rating. At threshold voltage, crowbar protectors pull the , gas tube clips voltage and then crowbars energy after their spark-over threshold is exceeded , and zener functions. These solid state suppressors clip voltage and then crowbar energy after their , crowbar suppressor when placed directly across an SSR is impressed voltage. www.vishay.com 302 A
Vishay Semiconductors
Original
SGT23B13 P3300AA61 sgs-thompson GE Transient Voltage Suppression P3100EA Zener Diode A2 axial TPA150A V120ZA1 TPB200B TPA200B V150ZA1

adp3205

Abstract: ADP3419 driver has sufficient voltage for proper operation, a crowbar input that turns on the low-side MOSFET , capacitor discharge during system shutdown. 10 IN 1 9 CROWBAR 4 ADP3419 SW 6 SD 2 DRVH 8 UVLO, OVERLAP PROTECTION, SHUTDOWN AND CROWBAR CIRCUITS DRVLSD 3 APPLICATIONS , 1 IN BST 10 ADP3419 DRVH 9 2 SD 3 DRVLSD 4 CROWBAR VOUT SW 8 , drives Anticross-conduction protection circuitry Output disable function Crowbar control Synchronous
Analog Devices
Original
adp3205 ADP3203 ADP3204 ADP3422 EMK325F106ZF GRM235Y5V106Z16 MO-187BA RM-10 ADP3419JRM ADP3419JRMZ-REEL1 D04620

15-V

Abstract: TPS2830 additional control functions: ENABLE, SYNC, and CROWBAR. Both high-side and low-side drivers are off when , CROWBAR for OVP, Protects Against Faulted High-Side Power FETs Low Supply Current.3 mA Typical Ideal , Temperature Range Available in SOIC and TSSOP PowerPAD Packages ENABLE IN CROWBAR NC SYNC DT PGND , PACKAGE (TOP VIEW) ENABLE IN CROWBAR NC SYNC DT PGND 1 14 2 13 3 12 Thermal 4 Pad 11 , when SYNC is low. The CROWBAR function turns on the low-side power FET, overriding the IN signal, for
Texas Instruments
Original
TPS2834 TPS2835 15-V TPS2830 TPS2831 TPS2832 TPS2833 SLVS223B

P1300EA70

Abstract: FLYBACK CLAMPING DIODE clips the overvoltage and then crowbars the energy. A crowbar device is necessary when the desired operating voltage approaches the SSR's maximum load voltage rating. At threshold voltage, crowbar , crowbars energy after their spark-over threshold is exceeded. Semiconductor Suppressors: These devices are , suppressors clip voltage and then crowbar energy after their zener threshold voltage is achieved. When , clamp and a crowbar suppressor when placed directly across an SSR is impressed voltage. A crowbar
Vishay Intertechnology
Original
FLYBACK CLAMPING DIODE harris mov MOV v175la10a gas suppressors DIODE SSR 150 TVS 200 diode TPB220B TPA220B V150ZA8 P3000AA61/ TPB240A TPA240A
Abstract: Programmable Delay â'¢ Over-Voltage Fault Latch W ith 100mA Crowbar Drive Output DESC RIPTIO N The , fault alert output for either fault condition. In the over-voltage case, a 100mA crowbar output is activated. An over-voltage latch w ill m aintain the crowbar output and can be used to shutdown the driver , CROWBAR GATE 0 EH O.V. LATCH & RESET COMPENSATION/SHUTDOWN V - [5} in {IT] FAULT DELAY , . 400mA Driver Source to Sink V o lta g e .40V Crowbar -
OCR Scan
UC1834 UC2834 UC3834
Abstract: sufficient voltage for proper operation, a crowbar input that turns on the low-side MOSFET independently of , Crowbar Control Synchronous Override Control Undervoltage Lockout Pbâ'Free Package is Available PIN ASSIGNMENT IN 1 10 BST 2 9 DRVH 8 SW CROWBAR 4 7 GND 5 6 DRVL SD , 10 IN 1 SD 2 DRVLSD 3 CROWBAR 5V BST 5 9 UVLO, OVERLAP PROTECTION, SHUTDOWN AND CROWBAR CIRCUITS 8 DRVH 5 FROM CONTROLLER PWM OUTPUT SW FROM SYSTEM ON Semiconductor
Original
846AC ADP3419/D

transistor c3423

Abstract: c3423 conjunction with an external "crowbar" SCR. The device senses the overvoltage condition and quickly "crowbars , in value. The switch, S1, shown in Figure 3 may be used to reset the crowbar. Otherwise, the power supply, across which the SCR is connected, must be shut down to reset the crowbar. If a non current-lim , MOTOROLA MC3423 Overvoltage Crowbar Sensing Circuit This overvoltage protection circuit (OVP , threshold or trip voltage at which the MC3423 will trigger and supply gate drive to the crowbar SCR, Q 1
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OCR Scan
transistor c3423 c3423 2N6509 analog c3423 transistor three phase SCR gate drive circuit scr and circuit CR81-5
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