Ticking Bomb circuit diagram


Posted on Feb 7, 2014

Ticking Bomb sound generator circuit diagram. The circuit gets going by charging the 2. 2uF and when 0. 65v is on the base of the NPN transistor, it begins to turn on. This activates the BC557 and the voltage on the collector increases. This forces the small charge on the 2. 2uF into the base of the BC547 to turn it on more. Here the low cost and eas


Ticking Bomb circuit diagram
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y build circuit of ticking bomb sound generator. This circuit generates a sound matching to a loud clicking clock. The frequency of the tick is altered through the 220k potensiometer part. The circuit gets going by charging the 2. 2uF and when 0. 65v is on the base of the NPN transistor, . This is the diagram of heat detector circuit which already integrated with siren circuit in the output. This circuit applies a complementary pair comprising NPN metallic transistor T1 (BC109) and PNP germanium transistor T2 (AC188) to detect heat (because of outbreak of fire, for example) in the area and activate a siren/alarm. The collector of. All sounds in this circuit are generated by HT2884. There are 8 different sound effect can be produced that are 2 lazer guns, 1 dual tone horn sound, 2 bomb sounds, 2 machine gun sounds and a rifle shot sound. Note: Power is a 3 Volt battery, but the IC will work with any voltage. This is an easy, low cost and easy built circuit of an electronic horn which is designed close to quadruple op-amp IC LM3900 (IC1). IC LM3900 has four independent operational-amplifiers (A1 through A4) having a large output voltage swing. It is able to operate at up to 32V DC. The 1st op-amp (A1) is designed. This circuit is a powerful three stage, 9V FM transmitter (Tx) with a range of up to 1 kilometer in the open. It uses an RF transistor in its output stage and two BC547`s for the first two stages. Distance of...




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