Power Supply 6V-9V for a calculater

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 will enough encourage. TR1 which cooperate TR2 assemble be Tiristor many rapidities are onely. This circuit consumes current in the condition calmly don’t arrive at 5mA and Current fully a part will protect to have 12mA railing sizes only.

Power Supply 6V-9V for a calculater

Related Links
More about 12V to 6V DC converter circuit
More about calculator power supply circuit
6V power supply

12V to 9V 2A step down dc converter using IC 741 and 2N3055
dual power supply 3V,5V,6V,9V,12,15V with LM317,LM337
power supply regulator 1_2V-20V and 3V-6V-9V-12V 3Amp With LM317T and 2N3055
1-20V 10A adjustable dc power supply by LM338

           Eleccircuit highly recommends EasyEDA for PCB design and order

Low Cost & Fast PCB Prototypes - EasyEDA

Only $8.21 for 10 pcs, 2-Layer 100x100mm PCBs, 2-3 days delivery

 

Add a Comment

Your email address will not be published. Required fields are marked *