When we want to use the radio carrying a car that use power supply of 12 volts, but these radios require a voltage about 5 to 8 volts. Normally, We alway use a 3 pin DC voltage regulator(IC78XX series) for this job. Which may be will applied number 7806 provides the voltage of 6 volts. But it is non popular number. In my stores have IC-7805 is popular IC is applied in many digital circuits (5 volts power supply). However, we modifly 7805 to output of 6 volts in easily with to 6 voltage with two diodes only, to use …
I collect these transformerless power supply circuit, like to use a capacitor instead, it smaller and lighter than a transformer, will useful as follows
This circuit that you see, It is an one style of an easy simple power supply, for a recorder or a cassette player in the car which used voltage 12V.It is only using the current abount 100mA. When it occured over load current at output.it will not damaged with circuit.(have only current 2Amp) While it can to used the voltage about 6Volt at 800mA max. The resistance of R1 serves to limit the short circuit current at about 2 amps.And reduce the power consumption of the series regulator transistor Q1.(which acts as the emitter follower circuit with a base voltage …
The circuit that see this is power supply 6V to 9V (Input 12V) of a calculator. That have preventing something through the circuit in. The part that perform to heal strong a picture uses the integrated circuit op-amp multi-purpose 741 numbers in the character comparator mode. The circuit protects output compose transistor TR1-TR3. By transistor TR1 perform acknowledge voltage straddle Resistor R3. Which work when have current about 250mA or more than flow through R3 when TR1 work pick load C3 as a result will do way resister package R5 10K values and thereafter 2 railings second. The voltage its …
This be Basic Dual DC Power Supply 6 volts (+6Vdc ground -6Vdc). Which used easily a little electronics components and so cheap. But they used for the circuit that use lower current than 50mA only. If more than this current makes high ripple or high noise. We see in Figure 1 we will see that an AC 220V power reaches to a transformer to induce input AC voltage 220V to 6V. then it into both diode to half wave rectifier until gets positive (D1) and negative (D2), next both capacitors C1,C2 are used for smooth a flactuating current into the …