300 2x 10W Integrated Amplifier - amplifiers tube
300 2x 10W Integrated Amplifier. (amplifiers tube)
The Audio Innovations 300 integrated amplifier was introduced in 1986. The 300Mk2 was introduced 5 years later in 1991. It is a 2x 10W Push-Pull amp using two ECL86's per channel in the power amp. It features 5 line inputs (4 for the Mk2) and a phono input.
The Audio Innovations 300 integrated amplifier was introduced in 1986. The 300Mk2 was introduced 5 years later in 1991. It is a 2x 10W Push-Pull amp using two ECL86's per channel in the power amp. It features 5 line inputs (4 for the Mk2) and a phono input.
18v power supply USING LM350T
18v power supply USING LM350T
This is a classic linear power supply which produces a regulated 18v, rated at about 1 amp.
POWERSUPPLY
This is a classic linear power supply which produces a regulated 18v, rated at about 1 amp.
POWERSUPPLY
18V / 1 AMP POWER SUPPLY
7805 power supply
5V power supply using 7805
7805 is a 5V fixed three terminal positive voltage regulator IC .The IC has features such as safe operating area protection,thermal shut down, internal current limiting which makes the IC very rugged.Out out currents up to 1A can be drawn from the IC provided that there is a proper heat sink.A 9V transformer steps down the main voltage , 1A bridge rectifies it and capacitor C1 filters it and 7805 regulates it to produce a steady 5V DC .
Circuit diagram with Parts list.
The bridge D1 can be also made by yourself by using four 1N 4007 diodes.
If more than 400mA current is supposed to be taken from the circuit , fit a heat sink with to the 7805 IC.
7805 is a 5V fixed three terminal positive voltage regulator IC .The IC has features such as safe operating area protection,thermal shut down, internal current limiting which makes the IC very rugged.Out out currents up to 1A can be drawn from the IC provided that there is a proper heat sink.A 9V transformer steps down the main voltage , 1A bridge rectifies it and capacitor C1 filters it and 7805 regulates it to produce a steady 5V DC .
Circuit diagram with Parts list.
powersupply
Notes.
The bridge D1 can be also made by yourself by using four 1N 4007 diodes.
If more than 400mA current is supposed to be taken from the circuit , fit a heat sink with to the 7805 IC.
12vdc power supply
12vdc power supply
12Volt DC Power Supply
D1 = BRDIGE
C1 = 2000UF / 25V
R1 = 200 R
D2 = IN759
R2 = 10K
Q1 =2N3053
Make Your Own Printed Circuit Boards on a Laserjet
Make Your Own Printed Circuit Boards on a Laserjet
This week, I collaborated with Xander to show you how to make your own printed circuit boards (PCBs) using a laserjet printer.
This week, I collaborated with Xander to show you how to make your own printed circuit boards (PCBs) using a laserjet printer.
Make Your Own Printed Circuit Boards on a Laserjet
switchmode power supply
switchmode power supply
A Switchedmode power supply (also Switchingmode power supply, SMPS, or simply Switcher) is an electronic Power Supply Unit (PSU) that incorporates a switching regulator in order to provide the required output voltage. An SMPS is actually a power converter that transmits power from a source (e.g., a battery or the electrical power grid) to a load ( a personal computer) with ideally no losses. The function of the converter is to provide a reliable output voltage often at a different level than the input voltage.
When mechanical shafts are rotating, a simple gear train can deliver power to a shaft at one speed from a shaft at a different speed. However, fluid power can be converted from a source with one pressure–flow ratio to another pressure–flow level without rotation by using the switching action of a hydraulic ram. Similarly, when AC power is being delivered from an AC source, a simple transformer can be used to convert power at one voltage level to power at another voltage level with low losses. Likewise, the switched action of an SMPS can convert DC power with low losses.
Switching-Mode Power Supply Design
This site is dedicated to switching-mode power supply circuit designers. Here you will find solutions to the most difficult problems facing you as a power supply designer, a tutorial that places power supply design problems in context, and resources that aid in your power supply design tasks. If you are a first-time visitor you will want to read this page as an orientation. If you have been here before (thank you for coming back), use the menu on the right to find the power supply design information you need.
Power Supplies Reference Manual and Design Guide
in the SWITCHMODE Power Supplies Reference Manual and Design Guide should ...... SWITCHMODE power supplies. The ICs for Switching Power Supplies figure
Switch Mode Power Supplies
SwitchMode Power Supplies: From Circuit Theory to the Workbench. Michael Tse ... To show how a switchmode power supply can be ..
Efficient Switchmode Power Supply Start-Up Circuit
Introduction
The purpose of this application note is to demonstrate the many advantages of using the Supertex LND150N3 in the
start-up circuit for switchmode power supplies.
Commonly used low voltage bipolar, CMOS and BiCMOS switchmode power supply PWM ICs usually operate from
supply voltages of up to 18V. When the input power for the switchmode converter is available at voltages higher than
the maximum voltage rating of the IC, the voltage has to be reduced with a start-up circuit. A frequent requirement is
for operation directly from a rectified 120V or 240V AC line without the use of tap changing switches for the selection of different voltages.
A Switchedmode power supply (also Switchingmode power supply, SMPS, or simply Switcher) is an electronic Power Supply Unit (PSU) that incorporates a switching regulator in order to provide the required output voltage. An SMPS is actually a power converter that transmits power from a source (e.g., a battery or the electrical power grid) to a load ( a personal computer) with ideally no losses. The function of the converter is to provide a reliable output voltage often at a different level than the input voltage.
When mechanical shafts are rotating, a simple gear train can deliver power to a shaft at one speed from a shaft at a different speed. However, fluid power can be converted from a source with one pressure–flow ratio to another pressure–flow level without rotation by using the switching action of a hydraulic ram. Similarly, when AC power is being delivered from an AC source, a simple transformer can be used to convert power at one voltage level to power at another voltage level with low losses. Likewise, the switched action of an SMPS can convert DC power with low losses.
Switching-Mode Power Supply Design
This site is dedicated to switching-mode power supply circuit designers. Here you will find solutions to the most difficult problems facing you as a power supply designer, a tutorial that places power supply design problems in context, and resources that aid in your power supply design tasks. If you are a first-time visitor you will want to read this page as an orientation. If you have been here before (thank you for coming back), use the menu on the right to find the power supply design information you need.
Power Supplies Reference Manual and Design Guide
in the SWITCHMODE Power Supplies Reference Manual and Design Guide should ...... SWITCHMODE power supplies. The ICs for Switching Power Supplies figure
Switch Mode Power Supplies
SwitchMode Power Supplies: From Circuit Theory to the Workbench. Michael Tse ... To show how a switchmode power supply can be ..
Efficient Switchmode Power Supply Start-Up Circuit
Introduction
The purpose of this application note is to demonstrate the many advantages of using the Supertex LND150N3 in the
start-up circuit for switchmode power supplies.
Commonly used low voltage bipolar, CMOS and BiCMOS switchmode power supply PWM ICs usually operate from
supply voltages of up to 18V. When the input power for the switchmode converter is available at voltages higher than
the maximum voltage rating of the IC, the voltage has to be reduced with a start-up circuit. A frequent requirement is
for operation directly from a rectified 120V or 240V AC line without the use of tap changing switches for the selection of different voltages.
Small Variable Power Supply Circuit Using LM723
Small Variable Power Supply Circuit Using LM723
This circuit is a circuit diagram of a variable power supply. Variable power supply circuit is a simple but reliable one based on an integrated voltage regulator from the eldest LM723. R2 set the output voltage. The maximum flow is determined by the value of R3, the excessive current in the circuit protection senses R3 and LM723 voltage output stage begins to close off this fast voltage approaches 0.65 V. In this way the current through R3 can never exceed 0.65/R3, even if output is shorted. C3 and C4, both ceramic, should be placed as close as possible to the integrated circuit, because the LM723 can be vulnerable to unwanted oscillations. The following is a schematic drawing:
Source: www.zen22142.zen.co.uk
This circuit is a circuit diagram of a variable power supply. Variable power supply circuit is a simple but reliable one based on an integrated voltage regulator from the eldest LM723. R2 set the output voltage. The maximum flow is determined by the value of R3, the excessive current in the circuit protection senses R3 and LM723 voltage output stage begins to close off this fast voltage approaches 0.65 V. In this way the current through R3 can never exceed 0.65/R3, even if output is shorted. C3 and C4, both ceramic, should be placed as close as possible to the integrated circuit, because the LM723 can be vulnerable to unwanted oscillations. The following is a schematic drawing:
The LM723 works with the input DC voltage V and IC 9,5-40 itself can be the source of about 150 mA if the output voltage is not more than 6-7 V below the input. When the external pass transistor is used (in the usual emitter-follower mode), the base-emitter of T1 is a significant resistance and the output stage of integrated circuits is relatively light load. All the current drawn by the load through a T1 and it decreases the amount of power that is proportional to the current and the difference between input and output DC voltage.
Source: www.zen22142.zen.co.uk
adjustable regulated power supply - 1.2 - 15Volt /3A
adjustable regulated power supply 1.2 - 15Volt /3A
This kit provides a variable output power supply ranging from 1.2 to 15 Volt / 3 A. It uses Low Dropout Positive Regulator LM1084 in TO220 package for delivering variable output voltage.
Schematic
Input - 18 VAC/DC
Output - variable output from 1.2 ~ 15 VOLT / 3 A Regulated low ripple DC voltage
Heatsink for regulator IC
On board bridge rectifier to convert AC to DC
LED indication at input of IC
Power Battery Terminal (PBT) for easy input and output connection
Zener trimmed band gap reference, current limiting and thermal shutdown (provided by IC feature)
Filter capacitors for low ripple DC output
Onboard PCB mounted Potentiometer (POT) for varying the output voltage
PCB dimensions 46 mm x 58 mm
Four mounting holes of 3.2 mm each
Parts List :
BR1 = BR34
CN1 = 2 PIN PBT
CN2 = 2 PIN PBT
C1 = 2200UF /25V
C2 = 0.1UF
C3 = 47UF / 25V
D1 = RED LED
P1 = 4.7K POT
R1 = 1.5K
R2 = 120ohm
U1 = LM1084
This kit provides a variable output power supply ranging from 1.2 to 15 Volt / 3 A. It uses Low Dropout Positive Regulator LM1084 in TO220 package for delivering variable output voltage.
Schematic
Output - variable output from 1.2 ~ 15 VOLT / 3 A Regulated low ripple DC voltage
Heatsink for regulator IC
On board bridge rectifier to convert AC to DC
LED indication at input of IC
Power Battery Terminal (PBT) for easy input and output connection
Zener trimmed band gap reference, current limiting and thermal shutdown (provided by IC feature)
Filter capacitors for low ripple DC output
Onboard PCB mounted Potentiometer (POT) for varying the output voltage
PCB dimensions 46 mm x 58 mm
Four mounting holes of 3.2 mm each
Parts List :
BR1 = BR34
CN1 = 2 PIN PBT
CN2 = 2 PIN PBT
C1 = 2200UF /25V
C2 = 0.1UF
C3 = 47UF / 25V
D1 = RED LED
P1 = 4.7K POT
R1 = 1.5K
R2 = 120ohm
U1 = LM1084
Adjustable power supply using LM317
Adjustable power supply using LM317
For the LM317:
R2 = (192 x Vout) - 240, where R2 in ohms, Vout is in volts and must be at between 1.2 V and 35 V.
Vin should be at least 2.5V greater than Vout. Select a wall adapter with a voltage at least 2.5 V greater than your regulated output at full load
Maximum output current is 1 A. Use proper heatsink for LM317 if it has to dissipate more than 1W.
The tab of the LM317 is connected to the center pin.
R2 = (192 x Vout) - 240, where R2 in ohms, Vout is in volts and must be at between 1.2 V and 35 V.
Vin should be at least 2.5V greater than Vout. Select a wall adapter with a voltage at least 2.5 V greater than your regulated output at full load
Maximum output current is 1 A. Use proper heatsink for LM317 if it has to dissipate more than 1W.
The tab of the LM317 is connected to the center pin.
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