2N3055 Power Supply | Electronic Project Circuits

Posts Tagged ‘2N3055 power supply’

DC power supply 5V and 12V using 2N3055-LM309

This be DC power supply regulator circuit be simple. That can give voltage come out 12V and 5V by use part base be Transistor 2N3055 and Zener Diode 12V. Make can take volt can reach about 15V maintain one’s position voltage be stable 12V well. And change the integrated circuit LM309 for regulate about 5V for apply to Digital Circuit general get. For C3-0.1uF filter the frequency disturbs all well. For other detail friends see in the circuit please sir.

Be the first to comment - What do you think? Posted by admin - November 19, 2008 at 8:18 am

Categories: Power supply Tags: 12v power supply, 2N3055 power supply, 5 volt regulator, Multiple Supply

DC Supply adjustable Voltage 0-20V at 1A

Today a friend comes to see at a house lead electronics old equipment come to amount of. He consults me that what is set equipment should build electronics project ? good. I then advise that try build DC Supply adjustable Voltage Circuit. all right by can fine voltage get , 0-20V at 1A max . Convenient for the circuit experiences general at want tall quality little because be model Regulated with. My friend will think to apply with Pre tone Amplifier Circuit, at use the transistor also. By you can use the transistor can replace many the number such as number TIP41 or TIP31 , or H1061 or C1061 or MJE3055. Fining decorates VR1 -5K make Voltage output modify from 0V to 20V. Besides should use a pot transforms the sky 2A sizes. Will have then current output 1A min. The detail is other see in the circuit sir.

Be the first to comment - What do you think? Posted by admin - August 20, 2008 at 11:22 am

Categories: Power supply, Variable Regulator Tags: 2N3055 power supply, Variable-DC-Power-Supply

0-30 Volt 0-1Amp Laboratory Power Supply with 2N3055

This circuit provides 0-30 volts, at 1 amp, maximum, using a discrete transistor regulator with op-amp feedback to control the output voltage. This power supply has constant current mode suitable for charging batteries.

With reference to the schematic, lamp, LP2, is a power-on indicator. The other lamp (lower) lights when the unit reaches its preset current limit. R5, C2, and Q10 (TO-3 case) operate as a capacitor multiplier. The 36 volt zener across C2 limits the maximum supply voltage to the op-amps supply pins. D5, C4, C5, R15, and R16 provide a small amount of negative supply for the op-amps so that the op-amps can operate down to zero volts at the output pins (pins 6). A more modern design might eliminate these 4 components and use a CMOS rail-to-rail op-amp. Current limit is set by R3, D1, R4, R6, Q12, R10, and R13 providing a bias to U2 that partially turns off transistors Q9 and Q11 when the current limit is reached. R4 is a front panel potentiometer that sets the current limit, R22 is a front panel potentiometer that sets the output voltage (0-30 volts), and R11 is an internal trim-pot for calibration. The meter is a 1 milliamp meter with an internal resistance of 40 ohms. Switch S1 determines whether the meter reads 0-30 volts, or 0-1 amp.

Source :http://members.tripod.com/michaelgellis/power2.html Thank You.