|
|
|
 有趣的电路请大家分析？ | | | | 一种抗干扰复位电路 | | | | 射极跟隨器參考電路 | | | | 脉冲发生电路 | | | | Hi-Fi 前置放大器 | | Hi-Fi 前置放大器
This circuit was submitted by Graham Maynard from Newtownabbey, Northern Ireland. It has an exceptionally fast high frequency response, as demonstrated by applying an 100kHz squarewave to the input. All graphs were produced using Tina Pro. | | ECM 麦克前置放大器 | | ECM 麦克前置放大器
Both transistors are low noise types. In the original circuit, I used BC650C which is an ultra low noise device. These transistors are now hard to find but BC109C are a good replacement. The circuit is very device tolerant and will set its quiescent point at roughly half the supply voltage at the emitter of the last transistor.
The electret condenser microphone (ECM) contains a very sensitive microphone element and an internal FET preamp, a power supply in the range 2 to 10 volts DC is therefore necessary. Suitable ECM's may be obtained from Maplin Electronics. The 1k resistor limits the current to the mic. The output impedance is very low and well suited to driving cables over distances up to 50 meters. Screened cable therefore is not necessary.
| | 成熟低成本的均流电路 | | 成熟低成本的均流电路 | | 成品功放电路-威廉逊电子管放大器副本 | | 成品功放电路-威廉逊电子管放大器副本 | | PT100的前端电路 | | PT100的前端电路，请大家欣赏。 | | 脉冲宽度调制电路 | | 脉冲宽度调制电路，里面有详细的分析。 | | 一款高效G类放大器 | | 一款高效G类放大器；_请欣赏！
这是一款功率阀值在20W启控的高效G类放大器，比起单独使用TDA7293具有更高的效率和更可靠的高功率输出能力。
|
| 首页 | 前页 | 后页 | 尾页 | 分页 1/1 [1] |
|
|
|
新闻
