9V Low Power Switching Regulator by IC RC4193

See Other projects in : DC Switching SupplySimple CircuitsStep Up DC converters
 And: ,

  Posted by momename - November 29, 2007 at 3:55 pm

This is the Power Switching Regulator 9V Circuit that is low current power output and It has strong point is the voltage input change from 2.4V to 10V but a constant voltage output 9 Volt. We used the RC4193 Micropower Switching Regulator is the base, easy to use and there are a few parts in circuit. The test battery point for check voltage of batter or input.

The low power switching regulator IC, number: RC4193, that that Contained in a small body of caterpillar 8-pin. It is designed for devices that work with batteries. The DC regulator power supply is built by the 11 normal parts. By has the 5 resistors, 2 capacitors, a diode, a choke coil and IC no.RC4193 and that importance the battery 2.4 volt to 9 volt : 1 set.
How it works
-This power supply has stable output voltage at 9V until battery is worn down to less than 2.4V The circuits is actual as shown below.

9V Low Power Switching Regulator by IC RC4193

-The RC4193 has a reference circuit inside, is controlled by the Ic current and is define from the resistor R1 that connected externally to IC1
- Which R1 is connected between the positive terminal of the battery to pin IC1 (pin 6).
- The ic Current can be changed from 0.5 micro-amperes to 100 micro amps. Without affecting the operation of the IC chip is calculated by the value of R1.
R1 = [(Ub -1.3)/Ic] kilo ohm
Ub is the battery voltage is measured in volts.
Ic is measured in mA.
- In addition to setting the bias current out to outside IC1, then The reference voltage is also used for monitoring the condition of the battery voltage is low. and set threshold value to input of loop regulation inside the IC chip. To compares with feedback voltage Uf (at pin 7)
- Ud is level that show how battery voltage low down? By use the resistor R2 and R5 are connected together to be divider voltage circuit. Which will take voltage drop across R5 sent to pin 1 of IC1, to check level voltage.
-The loop regulation inside IC1 will stop, when feedback voltage is lower than 1.3V and C1 is used be the oscillator frequency generator circuit of Saw tooth waveform.

Relate circuits link (sometime you may use it)
Micro DC Converter 3V to 9V using TL496 This be Micro DC Converter circuit. It perform modify from battery 3V or AA cell 1.5V x 2 be dc voltage 9Volt sizes. By this circuit s use electronic part a little 4 only just. By have IC TL496. It perform be switching edit the circuit for the energy collects to enter still the coil pulls to lead already lead electric upland energy go up this go to can control the pressure about 9V [...]
12V to 9V 2A step down dc converter using IC 741 and 2N3055 This circuit designs for modify power supply input 12V from battery or the other. Have the level voltage be down be left 9V be stable or , 9V at 2 Amp DC power supply . By this circuit gives usual equipment , seek easy. Be integrated circuit IC 741 and power transistor 2N3055. Besides this circuit still can fine to differ out voltage with well and have picture stability although load modify. [...]
DC Power Supply 9 volt using TIP31 transistor Today I receives electricity old printer from a friend. I think it can’t is usable , but power supply circuit still can be usable , modify be power supply source in electronics all work. I then build to is DC Power Supply 9 Volt Regulator, that can give current get about 1 Amp arrive at 2Amp. [...]