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Archive for the ‘Basic’ category

Door Alarm

11 September 2013 - Basic, Projects - Hypsine Electronics - No Comments

Hangs up on the door-handle Beeps when someone touches the door-handle from outside                                                                    Circuit diagram Parts: R1 1M 1/4W Resistor R2 3K3 1 or 2W Resistor (See Notes) R3 10K 1/2W Trimmer Cermet (See Notes) R4 33K 1/4W Resistor R5 150K 1/4W Resistor R6 2K2 1/4W Resistor R7 22K 1/4W Resistor R8 4K7 1/4W […]

Metal Detector

11 September 2013 - Basic, Projects - Hypsine Electronics - No Comments

The circuit described here is that of a metal detector. The opera- tion of the circuit is based on superheterodyning principle which is commonly used in superhet receivers. The circuit utilises two RF oscillators. The frequencies of both oscillators are fixed at 5.5 MHz. The first RF oscillator comprises transistor T1 (BF 494) and a […]

Battery voltage level indicator

10 September 2013 - Basic, Projects - Hypsine Electronics - No Comments

This circuit is simple battery level indicator circuit. Which be simple complicated can see that the circuit has will LED keep for display arrive at 3 step. The work of the circuit be this circuit was fixed come to give a temple volt usual that about 11V-14V. Which will the level volt normal, if level […]

Mosquito Repellant

10 September 2013 - Basic, Projects - Hypsine Electronics - No Comments

his is Circuit MOSQUITO REPELLANT.By High Frequency Sound.Use a electronics part ,easy to find and low cost.To See Circuit, have IC 555, 4017, 4011 and BC337,BC327.Output Piezo Speaker.Volt suppy +12V.

Siren by 2N2907 Transistor

10 September 2013 - Basic, Projects - Hypsine Electronics - No Comments

This be Simple Siren Circuit that build easily. Because of use the transistor 2 pcs only just. Can use 8 ohm size loudspeakers. Which , I uses old loudspeaker , at the sound doesn’t Amen! come to usable with this comfortable circuit. The usability just you presses switch (close) S1 a loudspeaker will utter. Enhance […]