Low Voltage Battery Indicator circuit using LM339
The simple low voltage tester circuit using LM339,can use Battery voltage monitor for voltage sources that problems, by LED display and alarm sound. Read more
Recycling electronic circuit boards to build 5V Regulator
I believe recycling electronic circuit boards with electronic circuits is good. Let’s create 5V regulator circuit for digital experimentation Read more
9V regulated power supply circuit diagram
Create 9V regulated power supply circuit using 7809 and transistor. For circuit requires stable voltage, low noise signal, and without AC voltage leakage. Read more
Toy Organ circuit using transistors
Let’s play a simple toy organ circuit. My daughter has interested in piano. Believe it or not, we can create a simple piano circuit by ourselves. Read more
Clock generator circuit, 60Hz oscillator using MM5369
This is 60Hz calibration frequency standards for digital clock. As 50hz or 60hz frequency generator at TP 3.579MHZ. power supply 12V.Out put Frequency 60HZ […] Read more