This battery monitor circuit can be used to monitor the charge level of a battery in 3 different steps, indicated by 3 separate LEDs. Just three LEDs are incorporated to […]
Stress Level Detector Circuit
This stress level Detector Circuit can be used as a Bio feedback control circuit for knowing the emotional status of a human brain and whether the person is suffering from […]
Frequency Multiplier Circuit
This frequency multiplier circuit can be used to convert any low frequency input into any desired higher frequency output. There may be events when it is needed to measure a […]
Ten Channel Touch Switch Circuit
This ten channel touch switch circuit can be used to generate ten individual on/off outputs in response to the touching of ten respective touch pads. Touch switches are available in […]
VHF Preamp Circuit
Building a preamp for the VHF waveband (approximately 100 MHz) is simply not a straightforward issue. This VHF preamp circuit, on the other hand, is not at all hard to […]
Temperature Alarm Circuit
This temperature alarm circuit permits a concurrent checking of a maximum of four temperatures. The individual detectors are attached to the main control unit by using a set of wires. […]