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Posts Tagged ‘UM66T’

Music box automatically with IC UM66T

This is an integrated music box Self Promotion Nat, when I open the music box to hear the music out. You can choose music in several voices, just change the IC number only.
Operation of the circuit is when the power supply and switch S1. The IC IC1 is dozen, it will count clock is rising edge. It has output out to pins 3, the circuit will be designed to be integrated from 3. By, if switch S1 No. 1, will be output from the pin 3. If the switch S1 No. 2 is the output out to pin 2. If the switch S1 No. 3 will be output from the pin 4. and if the switch S1 No. 4 is the output from the pin 7, the pin 15 at a pin reset is output out to pin 3 instead of the output of IC1 is connected to IC2.
Which acts as a switch, electronics, the signal output of IC1 to pins control the switch of IC2, too, if you can get input from pin 3 of IC1 incoming pin 5 of IC2 to the pin 3, where the power 5V connection. to Pin 4 connected to pin 2 of the IC3., a sound generator IC. The output will come out in three pins and was taken to expand the Q1, C2, R1, C3, C4, C5 serves to filter noise ground. IC2 is the operation of the switch contact IC3-IC5 to select music Controlling the sequence of switch S1.

Buzzer sound with ic UM66T

This is a simple musical doorbell sound or Buzzer sound circuit.When I switch to musical voice out of small speakers. Period of time.This size range power supply 3V,IC number UM66T audio production functions of various Toy Gallery, And increase the delay circuit includes a transistor and capacitor.
Operation of the circuit be When the switch S1, capacitor C1 will charge as fast as a result, Q1, Q2 the bias.Make a strong drop across R3 is a current flowing into pin 2 of IC1. Made IC1 work, If the switch S1 C1 will be discharged, through R1 to Q1.As a result, the lighter music of the period ever release the audio when the switch is based on the value of C1.

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Easy create music by UM66T

Operation of the circuit. When the circuit to the power supply. Is current flowing through R1 and LED1 LED1 light of the C1 will serve to filter noise ground. Voltage drop across LED1 is to be paid to voltage signal generator IC1 out of three legs then the amplifier Q1, Q2 connected together in a darlington transistor. In order to drive speakers with R1, R2 in Limited current circuit will flow through each device to prevent equipment damage.

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