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Buzzer driver circuit

April 23, 2012 by

็Here is a Buzzer or beep driver circuit, with the small speakers or tweeters pierce associates. There are several circuits as follows.
Buzzer driver circuit
Door buzzer sound with CD4001 CD4060

The Door buzzer sound circuit was two-tone sound. With the switch S1. working of circuit,The IC1 is a frequency dividing circuit, and generator a sound frequency came out.by the C1, R1 are the frequency generator. This audio signal from pin 7 and pin 4 into the pin 1 and pin 8 of the IC2a, IC2c

Peal from the transistor

Peal from the transistor The work of the circuit,which the Tone audio generatorcircuit will distribute to is 2 part, be first part is will the part frequency generator modern by using transistor 2 pcs. build be frequency generator circuit astable multi vibrator which Q1 and Q2 work alternate. When Q1 work LED1 stick lay part C2 begin charge with

UM66T IC MELODY INTEGRATED CIRCUIT

In the circuit basically usability base IC UM66T use sound of music sweet-sounding origin and be usable easily. It use just integrated one circuit and a loudspeaker , piezo buzzer , the small-sized , and have power supply 3V only. The detail is other of integrated number this circuit. The UM66T series are CMOS LSI

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Power Amplifier OCL 50W by MOSFET

August 27, 2011 by

This Circuit 50W rms Power Amplifier. by Power Mofet IRF530 and IRF9530. For supply +35V and -35V at 3A. If you like the amp sounds good, it creates a Mosfet amplifier, I think that is probably one of the options of interest. See that little device, low frequency and high frequency sound is good.

Read more and view circuit at : Power Amplifier OCL 50W by MOSFET

More circuits
OCL amplifier hi fi circuit
Class AB Amplifier circuits
Mosfet audio amplifier

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Fan control circuit

August 22, 2011 by

Fan Control Circuit May 18, 2010 … Here is a simple circuit based on two transistors that can be used tocontrol the speed of a 12 V DC fan depending on the temperature. …

Fan Controller by 741 Feb 12, 2008 … The amplifier gets quite hot while in use, so decided to use a fan to cool it. The fan, however, adds a lot of noise.

Processor Fan Control Sep 9, 2010 … Fans in PCs can be objectionably loud. In many cases, the amount of noise produced by the fan can be considerably reduced by lowering its …

Auto-Fan, automatic temperature control by 741 Jul 13, 2007 … This circuit good idea, By Tony van Roon Form http://www.uoguelph.ca/~antoon/ circ/auto-fan.html simple Circuit to Read more Related.

Heater Fan Controller by PIC12F675 Mar 16, 2008 … A PIC12F675 provides all of the necessary functions. It reads the (10k) linear potentiometer and generates appropriately timed pulses to …

DIY Dual Fan Controller Project Apr 1, 2008 … The project helps you control two fan’s to cool whatever you need. It works by cooling with the first fan when the sensor detects a user …

Temperature controlled Fan 12V dc Jan 28, 2008 … More 4959 Circuits schematics Circuit diagram – Burglar alarm systems – Led display – DC Power supply … More about fan control circuit …

Three channel fan speed controller for PC Oct 2, 2007 … Three channel fan speed controller for PC Jos van Eijndhoven have designed a 3 channel fan motor controllerbased on PIC 16F676 …

Thermal Fan Controller by IC 741 and Diode Oct 25, 2008 … The controller uses one or more ordinary silicon diodes as a sensor, and uses a cheap opamp as the amplifier. I designed this circuit to use …

Arduino temperature controlled PC Fan Oct 2, 2007 … Circuit diagrams and schematics – Electronic projects … More about fan control circuit · More circuit by LM35 …

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