* [[https://www.electronics-lab.com/project/full-wave-rectifier-using-single-supply-opamp/|采用单电源 OPAMP 的全波整流器]]
  * [[https://www.electronics-lab.com/project/universal-opamp-board-for-smd-msop8-package/|用于 SMD MSOP8 封装的通用 OPAMP 板]]
  * [[https://www.electronics-lab.com/project/universal-opamp-board-for-smd-sot23-5-package/|用于 SMD SOT23-5 封装的通用 OPAMP 板]]
  * [[https://www.electronics-lab.com/project/universal-op-amp-board-for-smd-soic-8-package/|用于 SMD SOIC-8 封装的通用运算放大器板]]
  * [[https://www.electronics-lab.com/project/universal-op-amp-board-for-dip-8-package/|用于 DIP-8 封装的通用 OPAMP 板]]
  * [[https://www.electronics-lab.com/project/clock-multiplier-crystal-frequency-generator-using-pt7c4511/|时钟倍频器 – 采用 PT7C4511 的晶体频率发生器]]
  * [[https://www.electronics-lab.com/project/voltage-controlled-pulse-width-modulator-pwm-pwm-signal-generator/|压控脉宽调制器 （PWM） – PWM 信号发生器]]
  * [[https://www.electronics-lab.com/project/multiphase-oscillator-with-40-spread-spectrum-frequency-modulation-and-250khz-frequency-output/|多相振荡器，具有 40% 扩频频率调制和 250KHZ 输出频率]]
  * [[https://www.electronics-lab.com/project/1khz-to-20mhz-low-power-oscillator/|1KHZ 至 20MHZ 低功耗振荡器]]
  * [[https://www.electronics-lab.com/project/pwm-module-with-dual-source-sink-outputs-using-sg3525/|PWM 模块，带双拉/灌输出，采用 SG3525]]
  * [[https://www.electronics-lab.com/project/7-segment-mini-clock-using-pic16f628a-ds1307-rtc/|采用 PIC16F628A 和 DS1307 RTC 的 7 段迷你时钟]]
  * [[https://www.electronics-lab.com/project/ds1307-rtc-module/|DS1307 RTC 贴片模块]]
  *[[https://www.electronics-lab.com/project/ds1307-real-time-clock-module/|DS1307 实时时钟模块]] 
  *[[https://www.electronics-lab.com/project/darkroom-timer-v2-0a-for-pcb-exposure-box/|暗室定时器 V2.0A 用于 PCB 曝光盒]]
  *[[https://www.electronics-lab.com/project/msf-radio-time-clock/|无国界医生电台时钟]]
  *[[https://www.electronics-lab.com/project/1-to-100-seconds-timer/|1 至 100 秒定时器]]
  *[[https://www.electronics-lab.com/project/long-duration-timer/|长持续时间计时器]]
  *[[https://www.electronics-lab.com/project/pulse-generator/|脉冲发生器]]
  *[[https://www.electronics-lab.com/project/230v-blinking-led/|230V 闪烁指示灯]]
  *[[https://www.electronics-lab.com/project/adjustable-highlow-frequency-sine-wave-generator/|可调高/低频正弦波发生器]]
  *[[https://www.electronics-lab.com/project/digital-stopwatch-0-60sec/|数字秒表 0-60秒]]
  *[[https://www.electronics-lab.com/project/digital-stopwatch-0-99sec/|数字秒表 0-99 秒使用数字 IC]]