This is mini dimmer switch circuit. It uses low voltage power supply and DCV too. You can select many circuits.
AC Dimmer for Lamp 6.3V This the circuit AC dimmer low voltage For lamp 6V. While this friends may don’t see the advantage of this circuit. But I thinks first step advantage be something get learn the work of Triac. And have tall safety , because of use AC Low Voltage. …

Halogen Lamp Dimmer With Soft Start Most dimmers use pulse width modulation (PWM) to control the amount of power that is delivered to the lamp. Those that come bundled with a switch faceplate control the firing angle of a Triac on the 240V mains side. These work fine with resistive loads but may not be suitable for inductive loads such as low-voltage halogen lamp transformers. ….

Dimmer With A MOSFET BUZ41A This circuit shows that dimmers intended for use at mains voltage do not always have to contain a triac. Here, a MOSFET (BUZ41A, 500 V/4.5A) in a diode bridge is used to control the voltage across an incandescent bulb with pulse-width modulation (PWM). ….

Controlled Power Dimmer Kit This is based communications protocol that is commonly used for stage lighting and stage effects. If you ever wondered how do they control all those stage lights, lasers, and other effects remotely from a single control point, ….

LINEAR CONSTANT CURRENT White LED Dimmer This simple Linear circuit provides continuously variable regulated current (~25-400mA) from a 4-6 Volt source. I chose a linear design for simplicity, reliability, ease of repair, and to avoid switching EMI in my Cave Radios. ….

LM8560 Digital Clock 24 Hr with alarm If do you want clock timer cicuit. I like this Circuit LM8560 Digital Clock 24 Hr with alarm. It is small and easy all in one pcb. I used IC LM8560 Digital Alarm Clock, 40 pin volttage supply 9V to 12V.
I like it. ……

PIC16F84 Alarm Clock This is an alarm clock I built. It was very effective during the sort time I used it, because I programmed it to play a very annoying tune through a speaker. I actualy started to wake up before the alarm went of, so other people int he house didn’t wake up from the anoying pitches it played. …..

PIC16F628 Digital Clock Timer This clock timer uses a PIC16F628 microcontroller to display 3 and 1/2 digit time and control an external load. It can be programmed to time from 1 to 59 minutes. The clock includes a calendar with leap year and optional daylight savings adjustments. …

24 Second Shot Clock by IC digital o start in 24 seconds; 24s LOAD SW and Reset SW should be push simultaneously. If not, the count will start in 99. Pulse input can be connected to 555 astable multivibrator but must be calibrated for real time clock. The PAUSE SW must have a Switch Debouncer so that the counter will count normal when counting is paused and then turn-on….