September, 2011

Music generator circuit

Monday, September 5th, 2011

Music Generator Circuit Jan 27, 2011  The main function of the circuit is the device of the circuit is IC1. This is a sound generator IC. The Christmas season. Its musical all 8 music

Tap tempo circuit using ic cd4011 This circuit will have an effect than Tap the rhythm circuit other because the whistle is giddy, which vividly than usual knock. You can also adjust the speed with 10-40 strokes per minute. Operation of the circuit, we will be divided into three main parts of the schedule, the frequency generator, the control and amplify [...]


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 [...]

Music box versatile using IC M3481 This is a multi-purpose integrated music box that interesting, because an IC package. Is a simple and affordable. The main function of the circuit is the device of the circuit is IC1. This is a sound generator IC. The Christmas season. Its musical all 8 music. When the power supply LDR1 the exposure will cause [...]

Touch controlled musical bell using UM3481 This circuit produces a musical tone whenever someone touches the touch point designated as TP in the circuit. The circuit works from two AA cells and produces enough sound. The circuit uses IC UM 3481 commonly used in musical circuits. The IC contains a ROM with 512 musical notes, tone generator, rhythm generator, modulator, run [...]

Keyboard music circuit The work of the circuit this origin frequency sound circuit model astable multi vibrator. When build the circuit suits power supply the circuit will still don’t work. But if we press switch S1 the circuit will begin the work. By have current flow through R9 get along well with B of Q2, make Q2 begin

Create music with hand touch Operation of the circuit. In the normal range will not work Piezo Tweeter speakers on tap, but not the point of A Q1 Q2 will flow and the work of the bias voltage fall across R2. And the current flowing into pin 2 of IC1 IC1 make music production work out of three legs with [...]

Create music with ic UM66T Most circuits, we find that the IC number UM66T common because the smaller ICI power consumption of culture is not very easy. Choose music that has many songs together. Operation of the circuit when the power supply circuit are currents flowing through LED1 LED1 light and the electricity flowing into pin 2 of IC1 IC1 [...]

bug detector circuit diagram

Monday, September 5th, 2011

FM surveillance BuG Transmitter using 2N2222 Nov 7, 2008 The Circuit shown can transmit voice to exceptionally good range. Tune trimmer to hear the signal to your near radio. Frequency range is

FM telephone bug Jun 18, 2010 A simple telephone transmitter circuit that is ideal for transmitting the telephone conversation through small distances.The circuit is very simple

Mobile Bug Detector using CA3130 Sep 6, 2010 This handy, pocket-size mobile transmission detector can sense the presence of an activated mobile phone from a distance of one-and-a-half

Bug Detector Circuit Mobile Bug Detector using CA3130. Monday, September 6th, 2010. This handy, pocket-size mobile transmission detector can sense the presence of an activated

Telephone Listening Bug with FM Transmitter by A933 Mar 7, 2008 Here is a simple transmitter that when connected to a phone line, will transmit anything on that line (execpt the dial tone) to any FM radio.

Telephone Listening Bug by A933 Jul 12, 2008 Here is a simple transmitter that when connected to a phone line, will transmit anything on that line (execpt the dial tone) to any FM radio.