Wiring Diagram Remote Control

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Friday, October 24, 2014

Ni Cd and Ni MH Adjustable constant current Circuit Diagram

This is a battery charger circuit with adjustable current for Ni-MH or Ni-Cd. It can be used for a constant current power, which can be set to any value from a few milliamps to about 500 mA. The maximum current is 500 mA, because that is the limit of transistor BC140. The input voltage must be above 5.25V output voltage, this is due to losses as 1.25V current limit and approximately 4V regulator.

Battery Charger Ni-Cd and Ni-MH Adjustable constant current Circuit Diagram

The LM317 regulator is used, it should have a sink.

Components
R1 100Ω resistor
VR1 trimpot or potentiometer 500Ω
Capacitor C1 0.1μF
C2 Capacitor 0.01μF
Diode D1 1N4001
Q1 Transistor BC140
IC1 Voltage Regulator LM317

Tuesday, January 21, 2014

15 V output regulated power supply circuit with uA723 and 2N3055

The supply receive from 220 /120/110 Volt AC , then lowered by the transformer . Then receives +20 Volts DC from rectifier / filter section. This applied to pin 11 and 12 of the IC uA723/LM723 , as well as to the collector of the 2N3055 series pass transistor. The output through R1 and R2, providing about 7 V with respect to ground at pin 4. The reference terminal at pin 6 is tied directly to pin 5 , the non inverting input of the error amplifier . For fine trimming the output voltage , a potentiometer can be installed between R1 and R2. A 100-pF capacitor from pin 13 to pin 4 furnishes gain compensation for the amplifier.
Base drive to the 2N3055 pass transistor is furnishes by pin of the uA723. Since desired output of the supply is 1 Ampere, maximum current limit is set to 1,5 Ampere by resistor Rsc whose value is 0,422 Ohm. A 100uF electrolytic capacitor is used for ripple voltage reduction at the output. A 1 kOhm output resistor provides stability for the power supply under no - load conditions. The 2N3055 pass transistor must be mounted on an adequate heatsink.

Wednesday, December 25, 2013

Type and function of subwoofer speaker box

Know Your Types of box type subwoofer

Performance subwoofer to produce low bass sound and also solid course supported by a subwoofer enclosure or box. Subwoofer box in the car usually has a different size, it is adjusted to the recommendations of the technical data from these subwoofers. However, each audio installer, have different styles in a box design.

If all this time, we only know when the box was just the type thats all, it did not. Box consists of various types and models. Models, size (dimensions) and a subwoofer box models are usually clearly taken into account at the time of manufacture, even carefully designed too often acted the Installer. Clearly, each type of box has a value of strengths and weaknesses, all models of boxes, if applied correctly, clearly gives a very maximum performance subwoofer.

Following this, the types of subwoofer box that is often applied in car audio:

If you want us to categorize the type of subwoofer box can be divided according to several orders of more detail:

• Second Order / Infinite Baffle / Free Air

• Typical Rear Deck Installation / Infinite Baffle / Free

• Back Seat Installation

• Small Deck Installation

• Second Order / Acoustic Suspension / Sealed enclosures

• Sealed

• isobaric - Sealed

• isobaric - Sealed (Compound Loading)

• isobaric - Sealed (Back to Back)

• isobaric - Sealed (Planar Loading)

• Fourth Order / Bass Reflex & bandpass enclosures

• Fourth Order / Bass Reflex

• isobaric - Bass Reflex

• isobaric - Bass Reflex (Compound Loading)

• Bass Reflex - Passive Radiator

• isobaric Bass Reflex - Passive Radiator

• Single Reflex - Band Pass

• Single Reflex isobaric bandpass

• Three Chamber Single Reflex bandpass

• Three Chamber Single Reflex isobaric bandpass

• Sixth Order enclosures

• Quasi Sixth Order Series-Tuned bandpass

• isobaric Quasi Sixth Order Series-Tuned bandpass

• Dual reflex bandpass

• Dual Reflex isobaric bandpass

• Three Chamber Dual Reflex bandpass

• Three Chamber Dual Reflex isobaric bandpass

• Eighth Order enclosures

• Quasi Eighth Order Series-Tuned Dual Reflex bandpass

• Quasi isobaric Eighth Order Series-Tuned Dual Reflex bandpass

• Eighth Order Triple Reflex bandpass

• Eighth Order Triple Reflex isobaric bandpass

Saturday, December 7, 2013

Classical audio power amplifier with IT and OT transformer

The circuit is devote to the radio receiver in which sound ( the gear ) is weak. With the help of this tool , which initially sounds as if far to be clearly audible. Power amplifier does not require much electrical current source , because all components are not up to over 1 Mega . But the result was incredible because it can enhance the power of catching the wave signal.

Troubleshooting :
Wether transistors placement is correct ?
Placement Elco ?
Check are cable .

If all components have benn checked , and the damaged has been replaced . Then try , turn the potentiometer slowly and listen to how the sound output by the speaker.

Sunday, December 1, 2013

12 volt fluorescent lamp and transformer equipped

Valid schematic circuit diagrams of fluorescent lamps with a voltage source using 12 volt battery. This circuit 12 volt fluorescent lamp is very useful if the power goes out or can be used in a dark place with no electricity, but can use the battery 12V. This 12V fluorescent lamp circuit i have tried and the results are bright, durable until decades. You can use 12Volt fluorescent lamps up to 40W. Use quality 12 Volt fluorescent lamp, do not use the fast heat, because the fast was also damage the transistor at 12Volt fluorescent lamp circuit . Do not occasionally mistaken in putting up the transistor .

Description for 12 volt fluorescent lamp Circuit Diagrams :

R1 = 220R/0.5W
R2 = 1/0.5W
C1 = 100n/100V
C2 = 220uF/50V
Q1 = D1885/D1710
A/B= To A fluorescent lamp/ and B to B fluorescent Lamp and just use one pin
B = Battery 12 volt with currents above 5A
Roll of copper wire on ferrite rod, with :
L1 = 1.2 mm diameter wire with many loops winding 20 times
L2 = 1.2mm diameter wire with many loops winding 20 times , and connected after the L1
L3 = 0.8mm diameter wire with many loops winding 500 times , connected after L2 and wrapped over L1 and L2.
F = Ferrite rod diameter of 10 mm
Number 1 - 4 in red will be connected to the winding.


This is transformator for 12 volt fluorescent Lamp

Installation fluorescent lamp with accu 12 V

Related Fluorescent Lamp Circuit : 3V Fluorescent Lamp