If β is big enough, IA≈Uref/R AThe technical data of this circuit:input voltage: UE=10~20Voutput current: IA=100mAlargest output current (R=805Ω): IAmax≈750mAcurrent adjustable rate (when △UE=1V, UE=15V, IA=100mA): F= △IA/IA=2×10-4load adjustable rate (when Ua=0~10V, UE=15V, IA=100mA): F=△IA/IA=1.6×10-3output current temperature factor: α70%. The output current of this circuit is determined by the following formula:IA=(Uref β)/R β+1 AIn the formula: Uref is reference voltage generated by voltage regulator tube, β is magnification coefficient of power tube. Published: 0:54:00 Author:May | Keyword: Constant current source, operational amplifier
#SUPERSYNC ALTERNATIVE FULL#
View full Circuit Diagram | Comments | Reading(2077) Constant current source using operational amplifier TAA861 Because the current on D1 is much higher than base-emitter current of transistor and the current on D1 is designed to be very high (5mA), the change of emitter current and reference diode current caused by the dispersion of transistor data and input current is very small. It can supply for parallel circuit composed of reference diode D2 and load resistor RL (here is 68kΩ). This circuit adopts voltage regulator tube D1, transistor T and resistor R1, R2 to make up constant-current source. Published:3 2:21:00 Author:May | Keyword: Reference voltage source using BJT View full Circuit Diagram | Comments | Reading(1020) Reference voltage source using BJT Published:6 3:50:00 Author:Jessie | Keyword: elevator door driver, mun
#SUPERSYNC ALTERNATIVE DRIVER#
View full Circuit Diagram | Comments | Reading(1713) APM-81 elevator door driver and mun circuit In the period of BU208 cut off, it can generate 3 peak value voltage on winding 2~16, then it is rectified to DC voltage by four rectifiers, finally, it is output by filter. It can periodically add this voltage to winding 1~7 of blocking AC transformer by utilizing switching transistor. And then it can generate 300V DC voltage. AC 220V voltage is rectified and filtered by the circuit. Meanwhile it isalso used to protect transistor from damaging in starting, normal operating and over load. Integrated circuit TDA4600 in this circuit mainly has the task of controlling, adjusting and overseeing switching BU208. Published:3 2:04:00 Author:May | Keyword: Blocking AC, power supply View full Circuit Diagram | Comments | Reading(1034) Blocking AC power supply with TDA4600 The power supply circuit diagram of SUPERSYNC MD-10III, SUPERYNC PWB-1290, SUPERSYNC PWB1291, SUPERSYNC PWB-1293, SUPERSYNC PWB-1361, SUPERSYNC PWB-1362 color displays Published:0 2:20:00 Author:May | Keyword: power supply, color display, SUPERSYNC View full Circuit Diagram | Comments | Reading(775) The power supply circuit diagram of six color displays
The power supply circuit diagram of SUPERSYNC MD-11III, SUPERSYNC PWB-1369, SUPERSYNC PWB-1505 color display (View) Published:0 2:13:00 Author:May | Keyword: power supply, color display, SUPERSYNC
View full Circuit Diagram | Comments | Reading(819) The power supply circuit diagram of three kinds color display Published:0 2:14:00 Author:May | Keyword: power supply, color display, SUPERSYNC View full Circuit Diagram | Comments | Reading(2900) The power supply circuit diagram of SUPERSYNC MD-14III, SUPERSYNC PWB-1509 type color display Published:0 2:11:00 Author:May | Keyword: power supply, color display, IBM View full Circuit Diagram | Comments | Reading(1224) The power supply circuit diagram of IBM 5153-002 color display Published:0 2:10:00 Author:May | Keyword: power supply, CASPER, dual frequency, monochrome display The power supply circuit diagram of CASPER CM-1489 dual frequency monochrome display
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