Pre Amplifiers
| Circuit / Schematic diagram of | Description |
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Transistor based amplifier with low loading effect |
| Head Pre Amp | Pre amp for magnetic head |
| Single Transistor Preamp | A simple all-purpose pre amp with a single NPN Transistor |
| Microphone Pre amp | Pre amp with very low noise |
| Band 2 preamplifier | This is a VHF amplifier for the Band 2 Radio Spectrum tuning approximately 88 - 108 MHz. |
| Car Stereo Pre amp | Audio head pre amp suitable for car stereo and other audio players |
| Computer microphone | Interface preamplifier between PC and MIC |
| EMC mic Pre Amplifier | A microphone amplifier that may be used with either Electric Condenser Microphone (ECM) inserts or dynamic inserts. |
| Electric mic Amplifier | Simple Mic Amplifier build around LM741 Op-Amp |
| FM Band Pre Amplifier | High Performance RF amplifier for FM Band |
| HI-FI Pre Amp | Exceptionally Fast High Frequency response |
| LM358 preamp | Audio Preamp based on a single op-Amp |
| Low impedance Mic Pre amp | The circuit is a mic amplifier for low impedance (~200 ohm) . |
| Low Noise Microphone Preamp | Preamplifier suited for low impedance of 600 ohm |
| Low Voltage Pre Amp | A low voltage preamplifier optimized for 3 Volt operation |
| Masthead Preamp | An ideal pre amp to be used for VHF Spectrum |
| Microphone Preamp | Simple pre amp using two NPN transistor |
| Medium Wave Active Antenna | The preamplifier is designed to cover the medium waveband from about 550Khz to 1650Khz. |
| Phono Preamps for All | |
| RIAA Equalized Stereo Phono Preamp | Perfect circuit for getting a signal off of your old turntable and into your mixing board. |
| Simple microphone preamplifier | simple microphone preamplifier circuit which you can use between your microphone and stereo amplifier |
| Sound Blaster Microphone PreAmplifier | Simple microphone preamplifier which enable using dynamic microphone with Sound Blaster card |
| Stereo PreAmplifier | Simple circuitry suitable for moving-magnet cartridges |
| Stereo Tape Head To PC | Circuit which help to play cassette tape through PC |
| SWatt RF PreAmplifier | Low cost isolation amplifier suitable for industrial application |