Voltase hobby: 6

Friday, October 17, 2014

6 to 15V DC to DC Converter

A very efficient 6V to 15V DC to DC converter using LM2585 is shown here. LM2585 is a monolithic integrated voltage converter IC that can be used in various applications like flyback converters, boost converters, forward converters, multiple output converters etc. The circuit requires minimum number of external components and the IC can source up to 3A output current.

6 to 15V DC to DC Converter Circuit diagram :

6 to 15V DC to DC Converter Circuit Diagram

Here the IC is wired as a boost converter where resistors R1 and R2 are used to set the output voltage .The junction of R1 and R2 is connected to the feedback pin of IC1. Capacitor C4 is the input filter while capacitor C1 the filter for output. Network comprising of resistor R1 and capacitor C2 is meant for frequency compensation. Inductor L1 stores the energy for acquiring boost conversion.

Notes:

Assemble the circuit on a good quality PCB.
LM2585 requires a heatsink.
Output voltage is according to the equation Vout =( (R1/R2)+1) x 1.23.
Capacitors other than C4 and C1 are ceramic capacitors.
Maximum output current LM2585 can source is 3A.

Saturday, September 13, 2014

6 Input Mixer Schematics

The mixer schema below has 3 line inputs and 3 mic inputs. The mic inputs are suitable for low impedance 200-1000R dynamic microphones. An ECM or condenser mic can also be used, but must have bias applied via a series resistor. As with any mixer schema, a slight loss is always introduced. The final summing amplifier has a gain of 2 or 6dB to overcome this. The Input line level should be around 200mV RMS. The mic inputs are amplified about 100 times or by 40dB, the total gain with the mixer is 46dB. The mic input is designed for microphones with outputs of about 2mV RMS at 1 meter. Most microphones meet this standard.

Friday, September 5, 2014

6 V to 12 V Power Supply Inverter Wiring diagram Schematic

This inverter schema can provide up to 800mA of 12V power from a 6V supply. For example, you could run 12V car accessories in a 6V (British?) car. The schema is simple, about 75% efficient and quite useful. By changing just a few components, you can also modify it for different voltages.

6 V to 12 V Power Supply Inverter Circuit Diagram

Part List:

R1, R4 2.2K 1/4W Resistor
R2, R3 4.7K 1/4W Resistor
R5 1K 1/4W Resistor
R6 1.5K 1/4W Resistor
R7 33K 1/4W Resistor
R8 10K 1/4W Resistor
C1,C2 0.1uF Ceramic Disc Capacitor
C3 470uF 25V Electrolytic Capcitor
D1 1N914 Diode
D2 1N4004 Diode
D3 12V 400mW Zener Diode
Q1, Q2, Q4 BC547 NPN Transistor
Q3 BD679 NPN Transistor
L1 See Notes
MISC Heatsink For Q3, Binding Posts (For Input/Output), Wire, Board

6 12 Volt Adjustable Power Supply Circuit

Power Supply in this article use a regulator that is composed of 2 pieces of NPN transistor. A transistor acts as a power regulator and a transistor again serves as a controller output voltage.

Power Supply has an adjustable output with a range of 6-12 VDC. The part that serves as a power regulator is Q1 TIP31. Then the controller output voltage is a voltage divider composed of R3, R4, VR1 and R2 provide bias to the base of Q2 to Q1 mengentrol power regulator. In a series of power supply is mounted 5.1 V zener diode which serves to make the minimum limit the output voltage with Q2.

Adjustable Power Supply with transistor circuit

Power Supply With transistor circuit is quite simple and can be made with the PCB holes, so for those who want to try to directly mempraktikannya. May the power supply circuit can be useful for readers, especially for friends who need a power supply circuit with the regulator transistor.

Tuesday, August 26, 2014

TDA1011 2 to 6 W audio power amplifier

Description:

The TDA1011 is a monolithic integrated audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The device is especially designed for portable radio and recorder applications and delivers up to 4 W in a 4Ω load impedance. The device can deliver up to 6 W into 4Ω at 16 V loaded supply in mains-fed applications. The maximum permissible supply voltage of 24 V makes this circuit very suitable for d.c. and a.c. apparatus, while the very low applicable supply voltage of 3,6 V permits 6 V applications.

Special features:

single in-line (SIL) construction for easy mounting
separated preamplifier and power amplifier
high output power
thermal protection
high input impedance
low current drain
limited noise behaviour at radio frequencies

Reference:

Supply voltage range Vp...........................3,6 to 20 V
Repetitive peak output current IORM...........max. 3 A
Operating ambient temperature Tamb ........−25 to + 150 °C
Storage temperature Tstg ........................−55 to + 150 °C

Circuit diagram:

TDA1011 circuit diagram

TDA1011 layout

TDA1011 pcb

Datasheet for TDA1011A: Download

Where you can buy: Aliexpress