Circuits & Schematics: detector - 5
Search for: "detector"
Search results: 152 Output: 41-50
- .. one of these devices. During the troubleshooting, it became apparent that the LM386 was acting as a high gain RF envelope detector, which could be used as an AM receiver by simply connecting a tuned circuit to its input. It turned out ...Jun 18, 2020
- .. (an OC171) behave as either a collector modulated Pierce oscillator (with a carbon microphone), or a super-regenerative detector feeding a dynamic earpiece through an impedance transformer. The power supply is a 9 Volt battery and the ...Mar 26, 2008
- .. emitters, but they can also function as photosensors. A single LED can even function as both a light emitter and a light detector in the same circuit. The basic idea is to pulse the LED, using the on-time to light it and the off-time ...Apr 1, 2008
- .. LED lights up, order something else. The circuit is similar to the unbalanced version of the Cheap but Sensitive Radiation Detector above and only requires two darlington transistors, an LED, and one or two resistors along with a ...Nov 29, 2007
- .. produces. You apply both pulses to IC3, a 7400 or equivalent NAND gate, which together with IC1 forms a long-pulse detector. Use the equation in IC1's data sheet to select values for C1 and R1 that yield a value of approximately ...Dec 18, 2007
- .. it again so I made a solenoid operated 3 way valve to turn the suction on and off quickly. The top circuit board is an opto detector which looked at tabs on the right hand rail to know where the shelves were. The board below it is a ...Mar 4, 2008
- .. easily detect both audio and RF signals up to frequencies of around 100 kHz. Note, however that this circuit is NOT a metal detector, but will detect metal wiring if it conducting ac current. Frequency response is from 50 Hz to about 100 ...Oct 30, 2007
- .. below the battery voltage. The MAX471 current-sense amplifier monitors the charging current and feeds back to a threshold detector so that below a designed threshold the flyback converter can switch to a lower charging voltage for ...Mar 25, 2008
- .. in the range 1.5-3 cm. If you are needing a simpler circuit of this kind driving a LED or a relay, click Infra-red Level Detector.Aug 3, 2009
- .. circuit is a 3 pin, tuned radio frequency circuit, and incorporates several RF stages, automatic gain control and an AM detector. It is easily overloaded and the operating voltage of th IC is somewhat critical to achieve good results. ...Dec 14, 2009
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