6V super bright LED circuit diagram

Crystal oscillator

Quartz Oscillator 3225 20M OSC

The CD74HC4017N high speed CMOS IC has a maximum rated supply voltage of 7V. It is rated for a maximum continuous output current of 25mA. In this project, the new battery has a maximum supply voltage of 6.4V, and the 24mA output current is so simple that the running IC is cool.

MC14584BCP * IC (Motorola) is an ordinary? 4XXX series? 3V to 18V CMOS IC with very low operating current and low output current. Its extremely high input resistance makes the project use high value resistors, timers and oscillators, and low supply current. Its six inverter Schmitt triggers perform simple oscillators and very fast switching.

Phase of IC2 Johnson counter/decoder 10. Output step 1 in a time series on the rising edge of each clock pulse. Each of its turn-on LEDs faces the anode of the positive supply.

Pins 1 and 2 of IC1 are Schmitt trigger oscillators, C3 and C4 are connected in parallel with a very low frequency. R1 and R2 control their frequency and diodes combined with R3 and capacitors to produce LEDs for 15ms of time.

Pins 5 and 6 of IC1 are luminance pulse width modulated oscillators. The pot associated diode and resistor R7 are controlled by the duty cycle of the PWM brightness that allows it to change its output. It drives the transistor.

Pins 3 and 4 of IC1 are an inverter. It takes a low time from the clock oscillator (LEDs are off), inverting the high and closed off the brightness oscillator through diode D6.

Pins 11 and 10 of IC1 are a sampling and holding phase. It requires a pulse of the sample to drive the LED although D3 and R4 and charge C5 in step #9. The highest speed, C5 Schmitt switch threshold voltage charging requires 4 steps. R5 and D5, slowly discharge C5 as the pause time.

Pins 13 and 12 of IC1 are inverters, reset the counter/decoder, and turn off the clock oscillator through D4, during the pause time.

Pins 9 and 8 of IC1 are not used, cutting off their input ground.

T1 is a switching transistor of PWM. R9 limits the maximum current of the LED to 24mA.