LED CIRCUITS

Author: Manikandan K J This is a simple 20 led chaser circuit built using the decade counter ic CD4017 and Dual flip flop ic CD4013. CD4017 is wired as divide by 10 counter. One flip-flop of CD4013 is wired as multivibrator and another flip flop is wired as divide by 2 counter. Output pin 2 from CD4013 is connected to …

Make your own Led Emergency Light At Home This is a very simple but high power led emergency light that runs on 4V, 4.5A rechargeable Lead-acid battery. You will need: W04 or 4 diodes connected as bridge rectifier Resistor R1 – 1K (1/4w) LED1 (Red colour to indicate power) Charger board LED2 (4V 5W or 10W) Switch (On/Off) Step-down transformer …

This is an improved version of the circuit shown in the previous post. Components Required: Resistors:R1 – 100E, 2WR2 – 390K, 1/2W Capacitors:C1 – 0.27uF or 0.22uF, 400V or 630VC2  – 10uF, 400V BR – Bridge Rectifier ( DB107 or W04)MOV – 275/20LED – Ultra bright white LED(40 numbers)General purpose PCBThe forward current of the LED that I have used …

230v Led Lamp Circuit Diagram | Ultra Bright Led Lamp Circuit Diagram Author:N.S. HARISANKAR VU3NSH Source: EFY  Thіѕ ultra-bright white LED lаmр works on 230V AC with mіnіmаl power соnѕumрtіоn. It саn bе used to іllumіnаtе VU meters, SWR meters, еtс. Ultrа-brіght LEDѕ аvаіlаblе in the mаrkеt соѕt Rѕ 8 tо 15.Thеѕе LEDs еmіt a 1000-6000mCd brіght whіtе light lіkе welding …