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- #2n3055 transistor switching circuit series
- #2n3055 transistor switching circuit zip
- #2n3055 transistor switching circuit free
The IC CA 3130 analyzes the output voltage given to the non-inverting input with respect to a reference voltage at the inverting input. The regulator circuit specifically operates in the following manner. The limiting circuit becomes inactive when P2 is moved completely clockwise. When P1 is rotated totally anti-clockwise, T3 restricts at 0.6 amps. T3 works like an output current controller. The high gain as a result acquired enables a superior level of regulation, and the T1/T2 Darlington pair offers a adequately large current boosting.
#2n3055 transistor switching circuit series
In addition, higher extension of the output range becomes feasible through the inclusion of T4 between the IC and the series pass transistor. The broad output selection is implemented with thehelp of the integrated circuit CA 3130, that is able to work even with a zero volt input/output differential. The key highlights of the circuit are: wide range output: 0.1 to 50 volts excellent load regulation: 0.005% between 0 and 1 amp, decent line regulation: 0.01%, reduced output disturbance: superior to 250 microvolts. Colvin is presented below for the viewer assessment: 2N3055 Wide Range Variable Voltage Regulator
#2n3055 transistor switching circuit zip
The design features an over-current shut down with LED indication.įor PCB Design and other Related Data, you can Download the following ZIP File:Īnother Similar Power Supply Design as Referred by Mr. William C. The revised and simplified design can be viewed in the following diagram: The above designs were assessed and simplified with more effective results by Mr. The above design was inspired from the following circuit which was designed and presented in the elektor electronics magazine by the elektor engineers: Simplified Variable Power Supply Design using 2N3055 and 2N2222 Transistors
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Original Transistor Power Supply Diagram: If you have any doubts regarding this variable voltage and current power supply circuit using transistor 2N3055 circuit please do not hesitate to ask then through the comments below. P1 is set to choose the maximum range within the value that’s marked or identified by the resistor R4. The value of R4 is specifically becomes responsible for defining the maximum allowable output current. Therefore in this variable power supply circuit using 2N3055 transistor, the transformer being a 0 – 40 V, the output becomes variable right from 0.6 to 40 volts maximum, that’s very handy indeed.įor implementing the current control feature, T3 along with P1, R5 and R4 are involved.
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If any other specific minimum value is required then the diode can be replaced by zener diode having the required specified value. The inclusion of D1 makes it sure that the voltage can be lowered right down to 0.6 volts, which happens to be the forward voltage drop of the diode. Circuit Diagram How it WorksĪ keen look at this 2N3055 based variable voltage current power supply circuit using transistor 2N3055 reveals that it’s actually only an ordinary stabilized power supply circuit, however it yet still provides you with the proposed features very efficiently.The voltage variations are made by using the preset P2, through a feedback configuration employing the components D1, R7, T2 and P2. Few suppliers still have the older RCA 2N3055H transistors.1) Adjustable from 0-30V, 0-60V, and 0-100V, and 500mA to 10 Amp as per user preferenceĢ) Short Circuit Protected when mounted on proper heatsinkĪ power supply circuit that does not include the features of a variable voltage and current control can by no means be considered truly versatile.Ī variable workbench power supply circuit explained in this article is not only specified with a continuously variable voltage control but is also equipped with the feature of overload or continuously variable current control. Repair shop personnel report 2N3055H transistors perform better in vintage equipment. Note: Genuine RCA 2N3055HOM/2N3055H Power Transistors have a reduced bandwidth as compared to the new currently manufactured 2N3055 replacements. RCA - 2N3055HOM is a High Reliability Version "Hometaxial Selected version" of the old standard which often works as compared to earlier versions "E" (Epitaxial). Max Current: 15 Amp collector, 7 Amp base.Īpplication: Designed for general purpose switching and amplifier applications.
#2n3055 transistor switching circuit free
Then only the base layer had to be etched free for contacting. They were manufactured by simultaneously inversely doping a wafer with a base doping on both sides, thus generating the emitter and collector layers. The first transistors were called hometaxial, and this model is certainly one of them. Over time, RCA changed the structure of the 2N3055 transistors. RCA - 2N3055HOM / 2N3055H Transistor, NPN Silicon.