Can you explain how to connect a type 7812 voltage regulator ic?
A Type 7812 voltage regulator ic (integrated circuit) is 3-terminal device with separate pins for Input, Output and Ground.
Basically you connect a suitable source (a battery or a power supply unit that plugs into the house's main electricity service) to the Input pin and the Ground pin. Connect your load device (the equipment which requires a regulated voltage) to the Output pin and the Ground pin.
You can find circuit diagrams for using this type of voltage regulator IC in electronics textbooks and often in the catalogs produced by suppliers of electronic components.
For technical and licensing reasons circuit diagrams cannot be included within the answers on this site.
The Related Link shown below gives detailed information about the ic itself, including its own internal circuit diagram.
The 7812 is not a transistor, it is an integrated circuit. the 78xx series are voltage regulators, where the xx indicates the voltage, in this case 12V. pinouts may vary, but most commonly it goes input, ground, output from left to right while reading the number. if you connect a voltage source between input and ground (with the positive on the input, negative on the ground), the voltage between output and ground will be 12V…
The 7812 is not a logic gate. It is a three terminal voltage regulator with an output of +12V. Looking at the pins of the TO-220 device, with the flat side down, the left pin and the case is common, the center pin is input,and the right pin is output. For the smaller TO-92 78L12 device, the left pin is output, the center pin is common, and the right pin is input
The 7812 is a 12v DC regulator that takes an input volt up to 44v and outputs 12v ( i believe there can be a 32v between the input and the output so 12+32=44 but check the data sheet). So to answer your question the 7812 is a voltage source that more than likely powers the rest of the circuitry in the clap switch, such as the relay, amp for microphone and any other devices.
To regulate a powersupply. The variations of voltage will be nullified by this ic. For example a three legged ic say number 7812 gives 12v dc supply if you are applying a voltage of 13 to 24vdc at a maximum current rate of 1 ampere. If applied voltage is 24v the dissipation will be approximately 12w.
it is a 3-terminal device: 1. input, 2. output, 3. earth. The input is a voltage between +14 and +20 v, the output is +12 v at up to 1 amp. Other positive voltage regulators are 7805, 7806, 7809, 7815, 7818 depending on the regulated voltage required. For negative voltage regulators use 7905, 7906 . . etc.
Here is circuit 9V power supply regulator with battery 12V backup system. Use IC 7812 and 7805 control voltage output by R3 1K output 9V 1A max. This is a 9V power supply which will work even on power failure. It uses a rechargeable battery and regulators. A transformer with 15-0-15 AC volts output is required. In the first regulator U1 the output is lifted up by 1.4V and in the second regulator U2 by…
I am building a simple 12VDC power supply with a 12VAC transformer and full wave bridge rectifier Whenever I add the filter capacitor I get a voltage of around 15VDC too far from 12V why is that?
There are two reasons for your results. The first relates to the operation of the transformer: All transformers are rated to deliver a maximum current. At that current, the output voltage will be the rated voltage. A transformer that has an output rating of 12V and 1A will deliver a voltage of 12 volts when the current drawn is 1 amp. If the current drawn is less than 1 amp, you can expect the voltage…
You can't use one resistor to bring a voltage down, you have to use two in series in a voltage divider configuration, that is two resistors of the same value in serie between positive and negative, then you will have 5V between negative and the point between the resistors, any value can be used depending on the current jou are going to draw, note: you can not use to small a value at least 1K…