xmas star circuit gradual increase and decrease in brightness with NE555

xmas star circuit with NE555

with gradual increase and decrease in brightness

IC : NE555

http://electronic-hobby-circuits.blogspot.com/

RS232 to TTL Converter circuit

RS232 to TTL Converter circuit

TTL serial (transistor-transistor logic) 

with 2N3904 and 2N3906 PNP transistors

 http://electronic-hobby-circuits.blogspot.com/

simple FM transmitter circuit

simple FM transmitter circuit for Hobby projects

Q1 and Q2 : any NPN transmitter

telephone ring indicator sensor circuit

telephone ring indicator sensor circuit diagrams

more at http://electronic-hobby-circuits.blogspot.com/

NAND gate symbols and truth table

NAND gate symbols and truth table free

more http://electronic-hobby-circuits.blogspot.com/

low power audio amplifier circuit

low power audio amplifier circuit

LM 386 circuits 

for more circuits, http://electronic-hobby-circuits.blogspot.com/

low cost door bell circuit diagram

low cost door bell circuit diagram

stay updated with new hobby circuits every week

low cost calling bell circuit diagram
 

220v to power LED bulb

220v to power LED bulb

Circuit to connect an LED bulb to 230 volts mains

please be careful while playing with main supply

20KV generator from 12V DC Supply circuit diagram

20KV generator from 12V DC Supply circuit diagram and parts list

IC Used : NE 555

TR : BD 679

All other parts are listed in image

high volt supply

high voltage generator from 12V Battery