Dual channel with ALC preamplifier circuit D3220 application

The D3220 dual-channel preamplifier circuit is a dual preamplifier consisting of two amplifiers and two ALC transistors (can be used as a variable monitor). The internal single-ended push-pull output stage can directly drive the meter and ALC circuit. The ALC between the channels is better balanced.

This article refers to the address: http://

D3220 dual channel with ALC preamplifier circuit

1.Shape:Conoid ,Multi-pyramidal,Columniform,polygonal or conical

2.Material:steel plate.stainless steel compound plate,stainless steel plate,ect.(anticorrosion treatment with hot galvanization,also color polyester power could be coated on the surface)

High strength low alloy steel Q235,Q345,GR65,GR50 to ensure the mechanical properity of microelement in order to ensure the quality of galvanization (other materials are also avaliable on request)

3.Jointing of pole with insert mode,innerflange mode,face to face joint mode

4.Design of pole :against earthquake of 8 grade ,aganist wind pressure of 160

5.Minimum yield strength:355 mpa

6.Minimum ultimate tensile strength :490 mpa

7.Max ultimate tensilestrength:620 mpa

8.Certificate:ISO9001-2000

9.Length:Within 14m once forming without slip joint

10.Welding:It has past flaw testing.Internal and external double welding makes the welding beautiful in shape

11:Packages:Our poles as normal cover by Mat or straw bale at the top and bottom ,anyway also can following by client required , each 40HC or OT can loading how many pcs will calculation base on the client actually specification and data

Our lighting equipment are made from quality sheet from bending,forming,automatic welding and hot galvanization.We can reach one-run machining length of 14m,and can bend sheet thickness up to 25mm.We adopt advanced welding procedures ,automatically weld main joints and reach rank-II welding quality.

Octagonal Pole

Octagonal Pole, Octagonal Street Light Pole, Octagonal Steel Pole, Octagonal Steel Electric Pole

YIXING FUTAO METAL STRUCTUAL UNIT CO.,LTD( YIXING HONGSHENGYUAN ELECTRIC POWER FACILITIES CO.,LTD.) , http://www.chinasteelpole.com